Buy Amsoil Synthetic Lubricants Factory Direct from Amsoil Dealer - Synthetic Oil AMSOIL Dealer Brian Dobben Presenting the Gold Standards in Lubrication and Filtration: Ultimate Fuel Economy, wear protection, environmental benefits and performance.

 Authorized Dealer of Premium Quality AMSOIL Synthetic Lubrication and Filtration Products

Phone: (419) 630-0874

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Satisfied Customers

Expert Advice For YOUR Specific Application


We DARE you -
the Ultimate Synthetic Oil Challenge


Converting to AMSOIL & Breaking in a New Engine - Please Read This Critical Information


Amsoil Retail Product Catalog

Download Newest Amsoil Product Catalog
(~2.5 mb pdf)



Get Your FREE Special Reports on Superior Vehicle Maintenance for Less Money

- we include important insider vehicle engineering facts that OEM's don't even tell their dealership mechanics ! 



Drive it for
a Million Miles like this 1999 Chevy Express 5.7L hits 1 Million miles on Amsoil

How does YOUR oil perform against Amsoil? See full 2009 Comparative Engine Oil Testing Report  

See How You Can Lower Your Vehicle Maintenance Costs to FREE


"Scamsoil Skeptics Corner

Revealing the boldest skeptic's questions... and our engineers' answers


Research Study Released -

September 2007! 

Since your whole tow load rests on TWO gear teeth, How can you save your "Diff" from failure? 

Hauling or towing?  How long do you want YOUR Differential to last?

Read the Free

Differential Gear Lubes Research White Paper (482 kb)  

Most of the 14 Name-Brand Gear Lubes Tested FAILED Specification Tests - is yours one of them? 



Free brochure on the Ultimate filters for engine oil and air (1.3 Mb pdf)


New CJ-4 Oil for the new 2007 Diesels


Fuel Economy:  Our exclusive Ultimate Guide to Improve Your Fuel Economy

(Updated again May 2009)


Boost your MPG -
See controlled test fleet average an 8.2% increase in fuel economy!


Breakthrough:  Nanofiber Air Filters use no oil, last over 100k miles, flow like oiled gauze, AND are 100% efficient
 at 3 microns!!!


NEW ! 

New AMSOIL EaAU Replacement Nanofiber Air Filters for Most Popular Air Induction Kits


What Product Do I Use?  When Do I Need to Change My Amsoil Oil or Filter? 

Oil & Filter Application Guide (PDF)


NEW ! 

New AMSOIL EaBP Nanofiber BYPASS Oil Filters are 98.7% efficient at 2 microns: take out more soot than any other filter!


Nanofiber Full-flow Oil Filters

Last 1-Year/25,000 Mile


AMSOIL AFL meets VW 505.01 and all Euro specs for gas/diesel/turbocharged>


26 Motorcycle Oils Tested: AMSOIL makes Motorcycle History with the most Comprehensive, Authoritative Research Study ever done (1 Mb PDF)






Duramax Diesel Owners


Ford PowerStroke Diesel Owners

Dodge Cummins Turbo Diesel Owners



The Importance of Engine Filtration


Military / Aerospace NanoFiber filtration for YOUR VEHICLES:

Nanofiber AIR Filters:

100% at 3 microns, last 4-Years/100k Miles


Nanofiber OIL Filters

Last 1-Year/25k Miles


Cold Air Induction - Nanofiber Replacement Filters for Popular Cold Air Intake Systems


Bypass Oil Filters run 2-Yrs/60,000 Miles: 

98.7% at 2 microns is better than any competitor






Get Your Oil Analyzed by a Lab (pdf)


GM Reveals Oil Change Intervals Average 8,500 Miles with Oil Life Monitoring System (OLS) (pdf)


3,000 mile oil changes?!  What a rip-off!  GET REAL with modern technology.


Warranty Laws You Need to Know


Informative Articles Must Read!


The Auto Industry's Best Kept Secret REVEALED!

Technical Properties of Oils & Lubricants:
 About the ASTM and API Tests, and What the Test Results Mean

The Facts About
Aftermarket Oil Additives


API Comparative Motor Oil Testing


North American Engine Oils may be Harmful to European Engines

Which 30-weight Oil to Use:  0W-30, 5W-30 or 10W-30, with Discussion of Viscosity Basics

Ford & Honda's 5W20 Issue

Ten Myths About Synthetic Lubrication

Oil Color, Lubrication Ability and Contamination Level





AMSOIL vs. Mobil 1


  Compare AMSOIL to the "top" name-brand synthetic oils

Frequently Asked Questions





Converting to AMSOIL & Breaking in a New Engine - Please Read This Critical Information



Exxon-Mobil FINALLY follows AMSOIL's 33-year-old introduction of Extended Drain Intervals - kinda sorta


Wholesale Dealership and Preferred Customer Opportunities


Home Business and Financial facts


AMSOIL Introduces Four New Two Cycle Oils


Expert Advice For YOUR Specific Application


Satisfied Customers








12 Standardized Tests on 26 Motorcycle Oils: the most Comprehensive, Authoritative Research Study in Motorcycle History (1 Mb PDF)


 AMSOIL Quality Impresses Harley Riders

Harley-Davidson Oil & The Low Quality of OEM Oils

Why Harley Owners Choose AMSOIL!


Harley-Davidson AMSOIL Application Guide

Synthetics, Slipperiness and Wet Clutches  - Simply Not an Issue




Authorized AMSOIL Dealer Website


Links Index


Other Website Links


To buy AMSOIL's CJ-4 Synthetic 5W-40 Diesel Oil, visit the AMSOIL On-Line Store


AMSOIL Synthetic Diesel Oil - DEO meets CJ-4 oil specifications

AMSOIL Synthetic 5W-40 (DEO) is the premium choice for API CJ-4 emission quality diesel oil required for model year 2007 and newer diesel engines.
The newer 2007 or later heavy-duty and pickup truck diesel engines require API CJ-4 oil to maintain emission quality. AMSOIL Synthetic 5W-40 Premium Diesel Oil (DEO) is the premium diesel oil choice for these trucks and vans.  This formulation provides the low ash, low zinc, and low sulfur levels that are required by vehicle OEM's for the correct operation and long service life of Diesel Particulate Filters (DPF's).  It has been tuned and proven over tens of millions of fleet miles, and includes robust new wear reduction technologies.

See Pricing Information or Place an Order

Package sizes include:

1-Quart Bottle
1-Quart Bottles (case of 12)
1-Gallon Bottle
1-Gallon Bottles (case of 4)
30-Gallon Drum
55-Gallon Drum

Automotive engineer Q & A on AMSOIL DEO CJ-4 Synthetic Diesel Oil
Impact of Biodiesel Use on Engine Oil
Diesel-Engine and Fleet Page

Product Description

AMSOIL Synthetic 5W-40 (DEO) is the premium choice for API CJ-4 emission quality diesel oil required by model year 2007 and newer diesel engines. It delivers extraordinary lubrication in diesel engines found in commercial, fleet and personal vehicles. Built with the latest additive and synthetic base oil technology, AMSOIL Synthetic 5W-40 Diesel Oil exceeds the higher performance demands of modern engines. It withstands the stress of heat, soot and acids to help prevent deposits, corrosion and wear. AMSOIL Synthetic 5W-40, with its broad viscosity range, is ideal for winter and summer use. It resists breakdown and can extend drain intervals when monitored by oil analysis.

AMSOIL, the leader in automotive synthetic lubrication, produced the world's first API qualified synthetic motor oil in 1972. As automotive engineers, we've come to trust the extensive experience of AMSOIL The First in Synthetics® to do the best job protecting our engines. So we recommend this as the best possible oil choice for 2007 and later diesels that need a CJ-4 oil.

Exceeds Emission System Requirements
AMSOIL Synthetic 5W-40 Diesel Oil is a low sulfated ash formulation that exceeds the modern requirements for low emission quality diesel oil. It is compatible with all exhaust treatment devices and is designed to extend the service life of diesel particulate filters (DPF's).

Controls Soot Thickening and Wear
The advanced synthetic base oils in AMSOIL 5W-40 Diesel Oil are naturally resistant to soot contamination. That, along with a heavy fortification of detergent/dispersant additives, keeps soot particles suspended independently, helping prevent the formation of larger wear causing particles. Viscosity increase is minimized and soot related wear is controlled.

Maximizes Fuel Economy and Reduces Oil Consumption
AMSOIL Synthetic 5W-40 Premium Diesel Oil has a very low high temperature volatility rate (burn off). Because less oil vapor passes into the combustion chamber, oil consumption and emissions are reduced. Additionally, lower volatility helps AMSOIL Synthetic 5W-40 retain its viscosity after high temperature service for continued dependable protection and excellent fuel economy.

Excels in Extreme Temperatures
AMSOIL Synthetic 5W-40 Premium Diesel Oil resists thermal (heat) breakdown, oxidation and sludge formation better than conventional petroleum oils. And unlike conventional oils, AMSOIL 5W-40 contains no wax. It stays fluid in cold temperatures for improved oil flow, reduced bearing wear and easier starting.

AMSOIL Synthetic 5W-40 Premium Diesel Oil replaces 5W-40, 10W-40 and 15W-40 viscosity oils. It is an all-fleet oil that is “backwards compatible” with pre-2007 diesel engines, and recommended for newer and older diesel and gasoline engines and other applications requiring the following worldwide specifications:

• API CJ-4, CI-4+, CH-4, CF
• API SM, SL, SJ...
• Mack EO-O Premium Plus
• DDC Power Guard 93K218
• Caterpillar ECF-3, ECF-1
• Cummins CES 20081
• Volvo VDS-4
• MB 228.3
• MTU Type II

Note:  The recommended product for meeting the latest European specifications for gas and diesel engines in Volvo, Volkswagon (VW), Audi, Mercedes Benz, and BMW, is Amsoil European Car Formula 5W-40 (product "AFL")

AMSOIL Synthetic 5W-40 is compatible with conventional and synthetic motor oils. Mixing AMSOIL motor oils with other oils, however, will shorten the oil life expectancy and reduce the performance benefits. AMSOIL does not support extended drain intervals where oils have been mixed.

Aftermarket oil additives are not recommended for use with AMSOIL motor oils.

AMSOIL Synthetic 5W-40 Premium Diesel Oil is recommended for use according to the longest service interval established by the engine, vehicle or equipment manufacturer, unless the engine is running on biodiesel or a biodiesel blend.  Drain intervals may be extended when monitored by oil analysis.



Biodiesel fuels produce more rapid breakdown of ANY engine oil. 
No matter what brand or type of engine oil you use, you will need to closely monitor your oil performance with oil analysis and shorten drain intervals as your use of biodiesel blends increases beyond 2% or B-2.  In many cases, this will mean cutting your previous oil drain intervals in half (assuming use of the same engine oil).  If extended oil drain intervals are not shortened, biodiesel contamination is likely to produce engine damage due to oil failure.  [MORE]

AMSOIL Ea™ and Donaldson Endurance™ full flow oil filters are designed for extended drain intervals. They stop smaller particles, have less restriction and last longer than regular filters. For best performance use AMSOIL Ea™ or Donaldson Endurance™ oil filters.

Health & Safety
This product is not expected to cause health concerns when used for the intended application and according to the recommendations in the Material Safety Data Sheet (MSDS). An MSDS is available upon request at 715-392-7101 or via the Internet at Keep Out of Reach of Children. Don’t pollute. Return used oil to collection centers.


AMSOIL Synthetic 5W-40 Premium Diesel Oil   (Product Code: DEO)

Kinematic Viscosity @ 100°C, cSt (ASTM D-445)


Kinematic Viscosity @ 40°C, cSt (ASTM D-445)


Viscosity Index (ASTM D-2270)


CCS Viscosity @ -30°C, cP (ASTM D-2602)


Flash Point °C (°F) (ASTM D-92)

226 (439)

Fire Point °C (°F) (ASTM D-92)

242 (468)

Pour Point °C (°F) (ASTM D-97)

-44 (-47)

Noack Volatility (DIN 51581) 250°C for 1 hour, % weight loss


Four-Ball Wear Test (ASTM D-4172: 40kgf, 150°C, 1800 rpm, 1 hr) Scar diameter, mm


Total Base Number


High Temperature/High Shear Viscosity, cP (ASTM D-4683)


Sulfated Ash Content, wt. %



Questions and Answers

about Amsoil's CJ-4 Oil:

These questions have been answered by our degreed automotive engineers.
(None of them are employed by AMSOIL, Inc.)


Q:  (October 2006)

I have a 2006 {diesel vehicle} that doesn't have a soot filter in the exhaust.  Is this new oil better than the other Amsoil diesel oils?  Will Amsoil be discontinuing the older oils?  Should I use this new oil in my 2006, or stick with the older CI-4 Plus oils?

A:  Generally we recommend as best choice that you DO NOT use this oil in vehicles prior to 2007 models, unless your service group feels it is critical to have only one all-fleet oil in stock: because the earlier model years do not have diesel particulate filters, they do not need the restricted CJ-4 formulation of the DEO oil that limits the TBN to 8.0.  While this TBN is the best that Amsoil can formulate within the low-ash CJ-4 requirement, the lower TBN does compromise the extended drain interval performance of the "traditional" Amsoil synthetics.  This is why Amsoil recommends DEO "for use according to the longest service interval established by the engine, vehicle or equipment manufacturer": the additive package cannot handle the dramatically extended drain intervals that Amsoil's other diesel oils are designed for, and not enough 2007+ data is available for us to make further recommendations at this time. 

In addition, the CJ-4 spec also restricts the use of ZDDP to levels that cannot provide maximum wear protection.  For this reason also, the AMSOIL CI-4+ oils (HDD 5W-30 and AME 15W-40) provide greater wear protection than all CJ-4 oils.  While the use of CI-4+ oils does not fully protect the DPF warranties on those 2007+ vehicles, we heartily recommend HDD and AME for 2006 and earlier models. 

Don't mis-understand:  the CJ-4 oils are backwards-compatible "all-fleet" oils that still exceed nearly all performance aspects of everyone else's CI+4 oils, so you CAN use them in earlier vehicles and they will still outperform many other products.  The key limitation is that Amsoil's CJ-4 oil probably cannot perform to the same phenomenal drain intervals that their CI+4 oils do.  So DEO will need to be monitored more closely using oil sampling analysis for extended drain intervals, and even when using bypass filtration the oil may eventually have to be changed.  So in 2006 and earlier model diesels, we recommend that you always consider staying with the AME or HDD to keep the same Amsoil extended drain (or no-drain) intervals that you're using, at least until most of your fleet becomes powered by 2007+ engines.  Amsoil will NOT be discontinuing these oils.

Which oil should be used for 2006 and earlier diesel models?

Your two choices are the 15W-40 Premium Heavy Duty Diesel & Marine oil (product AME), or the Series 3000 5W-30 Heavy Duty Diesel Motor Oil (product HDD).  Despite your owner's manual recommendation of a 15W-40 oil, your PowerStroke/Duramax/Cummins/Volvo/Caterpillar engine - like nearly all engines - is designed to use a 30-weight oil.  The 15W-40 recommendation is based on the assumption of petroleum oils which will often "shear back" to a 30-weight oil in diesels, and if you use a 30-weight oil that shears back to a 20 weight oil you will have wear problems (or worse).  Of course, AMSOIL's HDD formulation will maintain viscosity as long as you are using it as recommended in a healthy engine (no fuel getting in the oil, for example) - so your engine will enjoy year-round benefit from the 30-weight oil it was designed for. 


[Below was updated Sept. 2007]

Both the AME and HDD oils are 25,000 mile oils that outperform every other available diesel oil on the market, and are LESS EXPENSIVE to use because of those extended drain intervals.  Both oils are also superb performers in gasoline engines.  The DEO oil exceeds the performance of any other CJ-4 oil on the market.  Any of the three oils will work well for you, but our best recommendation is for you to make an informed choice based on your specific needs.  Here are some suggestions to help you:


        For this Application...                                         Pick this oil:

  2007 & later models (CJ-4 spec is req'd)**                       5W-40 (DEO)

             Fuel Economy                                           Series 3000 5W-30 (HDD)

    Cold Temperature Performance                             Series 3000 5W-30 (HDD)

    All-fleet oil for home/farm/garden                     5W-30 (HDD), or any of the three

            Lowest oil usage                                     15W-40 (AME) or 5W-40 (DEO)

          OTR Freight Hauling                           5W-30 (HDD), 5W-40 (DEO), 15W-40 (AME)*

       All-fleet oil for class 3-8                              15W-40 (AME) - or 5W-30 (HDD)**

All-purpose oil for logging/heavy-construction           15W-40 (AME), 5W-40 (DEO)*



*While it is difficult to compare them, Engineers generally believe the thicker 40-weight oils (AME & DEO) may provide slightly more wear protection than 5W-30 (HDD) in extremely heavy applications, particularly off-road/gravel where drivetrains can be subject to heavy torsional shock-loading.  However, for highway/city mileage, HDD fuel economy savings probably exceed savings from reduced wear with AME - if there is any reduced wear at all with AME.  Experience has shown that changing to any of these three AMSOIL synthetic oils will produce fuel economy benefits.


**5W-40 (DEO) oil is also a fully backwards compatible, all-fleet oil.  So if using one oil for your entire fleet is one of your most important considerations, and your fleet includes 2007+ diesels (or earlier with DPF's), this is the oil to use.  However, be aware that the low TBN restrictions of the CJ-4 spec means that extended drain intervals will not be possible on your vehicles without oil sampling analysis.  (DEO has a TBN of 8.0, vs 12+ for AME & HDD.)  For this reason, our best recommendation is to use two fleet oils.  One for gas and 2006 or older diesels, and the other for 2007+ diesels.


Q:  (October 2006)

Why is the TBN so much lower than Amsoil's other diesel oils?  High TBN's are very important in diesel oils. 

This gets quite technical, but I'll give you the simplified version.  You are correct that high TBN's are very important, but the new CJ-4 spec places strict limits on ash, which has been the best (of very few ways) to get good TBN - essentially the low-ash restriction cripples the oil formulation so that we can't achieve the very long drain intervals in some cases that the oil would otherwise be capable of. 

The issue all goes back to NOx emissions: that's the first "domino" in the chain, and I'll walk you down the chain from link to link.  The environmental importance of extremely low NOx emissions is highly questionable in my opinion [see new information added below], and apart from this the newer 2002+ diesels are VERY environmentally friendly.  However, based on an assumed importance for extremely low NOx, the EGR (exhaust gas recirculation) rates had to be dramatically increased - from a typical 10-15% to an amazing 25-35%.  The proof of the technical ridiculousness of this is that it results in about a 10% reduction in diesel fuel economy as a lot of unburned fuel exits the exhaust ("soot" as black smoke), which is where the diesel particulate filters (DPF's) come in: these are required in order to trap the soot (unburned fuel), then periodically burn off that unburned fuel.  Once you do all that, you now have exhaust that is both clean AND extremely low in NOx emissions.

Now, you might say "wait a minute.  Do I understand correctly that in order to reduce NOx emissions, they are increasing fuel consumption by 10% - trading a small and very questionable environmental improvement for a 10% increase in the amount of fuel used?"  Yes.  You've got the picture exactly.

But to continue... due to the sensitive nature of the DPF's and its need to burn off up to 10% of the fuel consumption, automakers had to reduce every possible source of potential problems that could kill DPF performance over time, which is these two sources:

1) Sulfur in the fuel.  This was dropped from 5,000 ppm (parts per million) to 500 ppm in 1994, and now again in 2006 and 2007 - down to an unbelievable 15 ppm. Yet because of the amount of fuel burned, this remains the primary source of DPF plugging.

2) Sulfated ash, Phosphorus, Sulfur, and Zinc in engine oils.  Because after all, a slight amount of oil does get consumed in the engine and exits through the exhaust.

By limiting these elements and compounds in the motor oil, they have limited the performance capability of the oil in terms of wear protection and extended drain intervals.  This logically means that oil must be changed more frequently than would otherwise be needed, again consuming more natural resources that are non-renewable, and probably increasing the amount of used oil dumped in the environment.

Specifically, the CJ-4 oils are limited in their capability to reduce wear, to control/disperse soot, and to neutralize acids.  At the same time, the higher EGR rates are producing more soot and more acid in the oil, both of which are proven to reduce engine life.  And as the converters in the DPF's plug up with deposited Sulfur and other solids, the engine backpressure and running temperature goes up and the fuel economy goes down.  Engine manufacturers are finding that they have to increase engine displacement considerably in order to just maintain the same horsepower/torque output, making the efficiency losses more obvious.  And ALL of these hardware content changes mean significant increases in vehicle weight.  So oil performance, engine life, and long-term fuel consumption and towing performance have all been compromised (reduced) by these CJ-4 requirements.


Q:   But this change to the CJ-4 spec reduces NOx "greenhouse gas emissions", which is important to reduce global warming, right?  (Sept 2007)

Actually there is NO environmental benefit.  What it does is make us use 10% more non-renewable fossil fuel than we otherwise would, which is environmentally stupid - pardon the bluntness. 

Media madness and propaganda aside, there was never a strong link in the first place between the current cycle of slight global warming and manmade activities.  Yet many of the world's top scientists were ridiculed by the media for saying so - some of the same scientists who called the UN's original IPCC report unethical for the way they deliberately altered the report to make it appear there was a definite global warming problem with a definite human-impact factor, AFTER the final draft was approved by the authoring scientists.  Further, even staunch proponents of the Kyoto Treaty estimated/admitted that the total global impact of ALL the changes would be so small that they could not be reliably measured.  In itself, that fact is strong evidence that mankind's activities are not significantly contributing to that problem. But now another decade with no measureable changes has added to lots of new research. The evidence has grown quite large that the only clearly demonstrated link to long-term global temperature changes is solar activity and cyclical solar energy exposure.  In fact, global temperatures appear to track quite closely to changes in solar activity & earth's orbital proximity to the sun. 

Carefully consider this May 15, 2007 article:


Climate Momentum Shifting: Prominent Scientists Reverse Belief in Man-made Global Warming - Now Skeptics

Growing Number of Scientists Convert to Skeptics After Reviewing New Research

Following the U.S. Senate's vote today on a global warming measure (see today's AP article: Senate Defeats Climate Change Measure,) it is an opportune time to examine the recent and quite remarkable momentum shift taking place in climate science. Many former believers in catastrophic man-made global warming have recently reversed themselves and are now climate skeptics.   [more]


Q:   What about Biodiesel fuels that are now available in my area?  Is there any effect on AMSOIL engine oils?  (Sept 2007)

Yes, there is huge impact.  Biodiesel produces rapid contamination of the engine oil, and its' effects are noticeable even in the low "B2" blend of 2% biodiesel.  With a B5 or B10 biodiesel, the required drain interval of ANY engine oil is shortened.  For example, both Volvo and Cummins states that oil change intervals need to be cut in half to eliminate the risk of dilution of the engine oil.

Here is Amsoil's summary of the situation and recommendations, taken from the May 2006 TSB #MO-2006-05-04 on "Use of Biodiesel Fuel with AMSOIL Motor Oils":

"Effect of Biodiesel on Lubricants (13)

Fuel dilution resulting in viscosity reduction.

Sludge and varnish formation.

Depletion of alkalinity reserve in the oil indicated by total base number decrease.

Total acid number increases more rapidly, indicating oil degradation probably from more NOx acid formation.

Certain metals such as copper and lead leached from bearing due to biodiesel fuel in the lubricant.

Oil filters plugging from sludge.


AMSOIL Motor Oil extended drain interval recommendations do not apply to vehicles using biodiesel fuels at any mix ratios with petroleum diesel.

When using biodiesel fuels at any mix ratio, follow the OEM recommended oil drain interval."

What this means is that if you are going to use biodiesel, your best approach is to use only the low-content B-2 blend (2%), and use oil sampling analysis to determine drain interval.  Larger aftermarket engine oil pans would add oil capacity to help maximize the required drain intervals. In any case, use of oil sampling analysis is important when running any amount of biodiesel, in order to understand the oil drain intervals that your engine will need.

While Amsoil diesel oils cannot provide their same historical 25,000 mile drain intervals in combination with biodiesel, they will still provide much greater protection and longer drain intervals than other oils with the same biodiesel exposure.




        GMC DURAMAX                           FORD PowerStroke                           Dodge Cummins



Click on your turbodiesel pickup, or go to
The Diesel-Engine Page



AMSOIL is the undisputed leader in synthetics.............

Since 1972, AMSOIL Synthetic drivetrain LUBRICANTS have proven to be the highest performance engine oils, greases, transmission fluids, and hydraulic and differential gear oils on the market. 
But the other key issue is
nanofiber filtration. 
We now cover oil filters, air filters and other fluid filters like NO-ONE else can.  AMSOIL offers the highest performance, most cost-effective, most comprehensive filter line on earth.  Consider air and oil...


Until now, Nanofiber filtration technology has been used exclusively in heavy duty applications, including the US ARMY Abrams M1 tank. AMSOIL Ea Filters are the first and only filter line to bring this technology to the auto/light truck market.

EaO nanofiber oil filters provide unmatched full-flow filtering efficiency to 98.7 percent at 15 microns, and 50 percent at 7 microns.  This translates to a 70% reduction in engine wear rates, tripling remaining engine life while giving longer filter life and lower pressure drop for better cold-start performance: the only filtration that gives you the best performance in every category!  Compare that to the filters lining the auto-parts shelves, which don't tell you their common 7,500 mile design life and either won't tell you what micron level their efficiency rating is for, or they claim a micron particle size without stating an efficiency: deceptive, meaningless numbers. 

Additionally, consider bypass filtration systems for commercial and fleet applications in cars and light, medium and heavy trucks which can filter particles down to less than one micron and are 89% efficient at 1 micron, making oil changes virtually unnecessary and virtually eliminating engine wear.  (A standard full-flow oil filter can only filter to 20 microns with any reasonable efficiency, but 5-25 microns is widely accepted as the wear-particle size range.)  Easy to install, these oil filter systems have been proven by millions of miles of over-the road trucks, construction equipment and fleet service. And we use these on our personal diesel pickup trucks: my Duramax 2500HD has over 70,000 miles since the last oil drain, the oil analysis looks perfect, and the appearance of this diesel oil looks like a gas engine with 3,000 miles on the oil.

AIR FILTERS:Abrams M1A1 Battle Tank bites the dust with Nanofiber Filtration Technology

The MOST IMPORTANT filter on the M1A1 Abrams battle tank is its' nanofiber air filter. 
The MOST Important filter on YOUR vehicle is also the air filter.

It's far better, and easier, to keep wear particles out of the engine than it is to attempt filtering them out of the engine oil.  Yet filter companies and vehicle manufacturer's are strangely silent about actual air filter performance and engine needs.  Now AMSOIL offers world-leading breakthrough Ea air filters with exclusive nanofiber technology.  Based on battlefield-proven air-induction systems used in military ground and air vehicles, this high-technology filtration is now available for consumer use!  Ea filters are guaranteed for 4 years, 100,000 miles.  The engineering rule of thumb for damaging wear particle size is 5 to 25 microns.  Incredibly, these filters are 100% efficient at removing particles of 3 microns, and are 80% effective at removing particles of a 1 micron size.  This means that NO WEAR PARTICLES CAN GET PAST OUR Ea AIR FILTERS!  AND, they're less expensive to use than ANY other air filter.

For Power Sports applications, AMSOIL offers a line of oiled-foam filters.  These filters provide better performance than oiled-gauze air filters, and are used almost exclusively in most off-road applications including baja, dirt-track racing, and motocross.

For light to heavy trucks, both gas and diesel engines, AMSOIL's partnership with Donaldson provides you with the best performance and most cost-effective air filtration systems in the world.  These include both Powercore and Nanofiber technology filters.  We have the full line of  Donaldson Filters Now Available , including air, fuel, water, oil and hydraulic filters, with exclusive performance warranties (no one else in the industry offers filtration performance warranties).  Contact us for specific recommendations, or see our Diesel Page.

Air Induction Systems:

Well-engineered aftermarket air induction systems can provide airflow improvements with gains in horsepower, fuel economy, and towing torque.  Unfortunately in many cases they may also let far more wear particles into your engine than the OEM filter.  And oiled media can contaminate mass flow air sensors, causing problems with emissions, fuel economy and performance that can even damage transmissions in some cases.  AMSOIL lets you leave those problems behind. Their full line of nanofiber universal air induction filters (EaAU) are designed to replace stock oil wetted gauze or foam conical filters that were supplied with custom induction systems produced by K&N, Injen, S&B, Green, AIRAID, AFE, TrueFlow and more. Whether your air induction system is in a gasoline street-rod, or a diesel truck, you have great airflow but you need better filtration and more capacity than oiled gauze or foam.  AMSOIL Ea Air Induction Filters are dry no-oil filters with nanofiber filtration media to bring your aftermarket far better efficiency, 50 times the capacity, and excellent airflow while being easily cleanable - every 25,000 miles.


  • AMSOIL products saves you time and money.  With recommended extended drain intervals, AMSOIL performance typically costs LESS per year than conventional oil changes.

  • The only 25,000 mile/one-year and 35,000 mile/one-year motor oils in the world.

  • A vehicle lubrication solution with far less environmental impact, using an estimated 87% less oil and 5-10% less fuel !

  • The only oils and filters with a warranty for GUARANTEED performance!

  • Exceeds the most stringent performance specifications of all major U.S. and foreign automotive and truck manufacturers.

  • Provides up to four-times the wear protection of other motor oils.

  • Increases the mileage life of your vehicle.

  • Improves fuel economy.

  • Increases at-wheel horsepower.

  • Lowers transmission and differential operating temperatures and delivers better shifting, even in heavy towing.

  • Lowers fleet maintenance costs by lowering the costs of both scheduled maintenance, and mechanical repairs.

  • Lowers fleet capital costs by dramatically extending vehicle service-life.  (Vehicle mileage typically extended 20 to 100%.)

  • Diesel oil and filtration products designed to deliver more than 1,000,000 miles for over-the-road trucks before engine overhaul.

  • Used by many national racing teams, fleets, police departments, fire departments, ambulance fleets, construction firms and trucking companies.


DMT Technical operates as part of a group of highly skilled team of OEM Engineers and Lubrication and Filtration Specialists.  In fact, we are the ONLY such group on the internet, as well as the largest AND fastest-growing AMSOIL Dealer organization in the nation.  You too, can join our group when you become an AMSOIL Dealer and take advantage of all that we offer as you use products in your own vehicles or begin your own AMSOIL business. You cannot find a more knowledgeable and skilled group of Dealers anywhere. 

In addition, as a Dealer in our group you will receive exclusive unlimited product, technical and business support from the only group of Truck and Automotive Engineers and Lubrication Specialists on the net.  That's priceless - yet free - vital support that can make a huge difference to a growing business.

We do not run our business purely on the internet. We also have numerous commercial, industrial, trucking, excavating, construction, logging, police, racing and many more accounts that we support and service on a regular basis. We have several fully stocked warehouses and fully equipped shop facilities. This provides us with excellent knowledge of the products, equipment and the business and the ability to respond immediately to any of your needs. We will use this knowledge and experience to help you get started so you too can achieve your goals.

We possess the skills, desire and knowledge to answer questions, solve problems, improve efficiency, reduce downtime, maintenance costs and increase the durability and life of all of your vehicles.

Read what our satisfied customers have to say about us. Read through our website. Contact us with any questions. If you decide to become an AMSOIL Dealer you will be joining, in our opinion, the most skilled AMSOIL group there is. We will help you get started and provide you with the tools and information in order to be successful in this business or with technical and product assistance to use AMSOIL products in your own vehicles.

To get additional information:

We offer several options to receive information on AMSOIL. We welcome the opportunity to work with you personally as your servicing AMSOIL Dealer. Our AMSOIL Dealer Group is led by a Truck/Automotive Engineer and Lubrication Specialist with over 19 years experience. This exceptional benefit is unavailable elsewhere.

Please, email us at and we will send you an exclusive comprehensive package of product, technical and business information. If you are serious about AMS OIL products and the business opportunity this is the best option. You will receive extensive technical and business support from both myself and my Direct Jobber, a Detroit, Michigan Truck/Automotive Engineer and Lubrication Specialist with over 19 years experience. We look forward to helping you learn about AMSOIL.

Or for a smaller, very general information package (which includes a catalog and Dealer application) you can request information via any of the links below.  Please note that your information is always held in confidence per our Privacy Policy, and will never be sold, loaned or otherwise distributed.

To request a FREE Factory Direct Catalog by MAIL

To Immediately Download a FREE Factory Direct Catalog

For Information on Becoming an AMSOIL Dealer

To Buy AMSOIL Products in the AMSOIL On-Line Store

To Sell AMSOIL in Your Store or Purchase For Use in Your Businesses Equipment

To visit the AMSOIL Corporate Website for Product and Business Opportunity Information


AMSOIL is Proudly Made in the U.S.A.

AMSOIL is owned by Americans.

AMSOIL is America's Oil.

Filtration and Lubrication Gold Standards - the Best

DMT Technical

Ultimate Synthetic Oil - AMSOIL Products

Garner, North Carolina  27529

Phone: (419) 630-0874

E-mail: Brian