AMSOIL’s Diesel Trucking and Fleet Applications

Call anytime for our “dealer cost & container size” price list and your questions as well as single price inquiries.
Call us at 800-579-0580

Follow AMSOIL’s recommended intervals to reach lowest cost of ownership. It’s what we specialize in.

AMSOIL allows the fleet owner to control maintenance costs and solve problems which eliminate costs which are generally regarded as predicted or normal failures from heat, wear, miles or hours.
Why not keep your equipment longer while at the same time reduce emissions and energy costs?

See why we say, lower cost of ownership for fleets.

Does your fleet require several grades of engine and transmission lubricants? With AMSOIL, you can consolidate with universal products!

Light-Duty Diesels mid year 2007 which do not have the “Diesel Particulate Filter” exhaust system installed you do have a choice of using our original CI4+ oils (see Legacy list below).

Keeps Turbos Clean

Signature Series Max-Duty Synthetic Diesel Oil (100% mind you) provides protection boosted to the max delivering up to 60% better turbo cleanliness and withstanding the demands. Choose the Signature Series if you are coming to AMSOIL for the best product available. Choose the Heavy Duty line if you want the best but price is a key factor or you don’t put on more than 10,000 miles per year or interval.

Match Your VehicleProduct Guides


Product Directory:

Signature Series 6X Wear ProtectionDEO 5W-40 diesel oil

5W-40 Max Duty Synthetic Diesel Oil CJ4 (DEO)

Advanced synthetic technology provides excellent viscosity control and outstanding extreme-temperature performance, while minimizing oil consumption. The result: protection that’s boosted to the max.

Choose this one for maximum fuel mileage.

#1 Choice for newer RAM diesels

DME 15w-40 diesel oilCK4 rated 15W40 Synthetic Diesel (DME)

AMSOIL Signature Series Max-Duty Synthetic Diesel Oil delivers 6X better wear protection than required by the Detroit Diesel DD13 Scuffing Test for Specification DFS 93K222.

Currently AMSOIL’s bestselling Diesel Oil

Signature Series Max-Duty Synthetic Diesel Oil 10W-30

The next trend. 10W-30 MAX-Duty

Offers 6X better protection that required by the Detroit Diesel DD13 Scuffing Test for Specification DFS 93K222.


API CK-4/SN, CJ-4, CI-4+, CF

DZF 0w-40 diesel oil

AMSOIL Signature Series Max-Duty Synthetic Diesel Oil delivers 4X better cold-temperature performance when compared to SAE 15W-40 oil in ASTM D5293 cold cranking viscosity test.

Highly efficient cold climate best buy! Winter Favorite

DHD 5w-40 diesel oil

Advanced technology provides excellent viscosity control and outstanding extreme-temperature performance for diesel (and new and vintage gas engines). The result: protection that’s boosted to the max.

Popular with Ford 6.0 and others. Can be used in Classic Cars

Heavy Duty 15W-40 Diesel OilHeavy-Duty Synthetic Diesel Oil 15W-40

Engineered to provide 4X better wear protection, giving you the edge to keep trucks and equipment operating at peak performance. Heavy-Duty Synthetic Diesel Oil offers outstanding value for customers seeking an upgrade over conventional, synthetic-blend or competing “so called” synthetic diesel oils.

All the grain haulers but this one. Locally it’s my best seller.

Heavy Duty 5W-40 Fully Synthetic Diesel OilHeavy-Duty Synthetic Diesel Oil 15W-40 (ADO)

Provides 4X better wear protection, giving you the edge to keep trucks and equipment operating at peak performance. Step up from 15W-40

Great oil if you do less than 10,000 yearly. 100% Synthetic and saves fuel!

Heavy Duty 10W-30 Fully Synthetic Diesel Oil saves fuelHeavy-Duty Synthetic Diesel Oil 10W-30 (ADN)

Formulated for Exceptional Diesel Engine Protection. Provides 4X better wear protection, giving you the edge to keep trucks and equipment operating at peak performance. Saves fuel!

Many newer diesels require 10W-30.

Competition diesel oil 20W-50

DOMINATOR 20W-50 Competition Diesel Oil

AMSOIL DOMINATOR® 20W-50 Competition Diesel Oil is designed for professionals and enthusiasts who want a step up in diesel protection. It is specifically designed for high-horsepower diesel engines and delivers the benefits most important to diesel competitors, including robust durability, outstanding bearing protection and the ability to withstand the extreme pressures and temperatures common to diesel competition.

Legacy diesel oils:

15w-40 diesel and marine synthetic


15W40 Synthetic Diesel & Marine CI4+(AME) 

Engineered for pre-2007 diesel engines in on-road applications as well as all model year diesel engines in off-road applications. High 12 TBN controls acids from combustion blow-by and EGR. Additives control soot thickening, oxidation and wear. Extended drain capabilities reduce downtime and motor oil expenses. Still a top seller!

Premium Protection 20W-50 Synthetic Motor Oil
Product Code: AROQT-EA
For use in both diesel and gasoline engines. Ideal for applications where the extra protection of a higher-viscosity oil is desired. The higher viscosity may help reduce motor oil consumption in equipment experiencing higher than normal oil usage rates while running lower viscosity lubricants.
amsoil first oil 10W-40Premium Protection 10W-40 Synthetic Motor Oil

Product Code: AMOQT-EA

For use in both gasoline and diesel engines. Offers multi-functionality and wear protection. Ideal for applications where the extra protection of a higher-viscosity oil is desired. Excellent for motor homes and older vehicles, as well as many types of modern equipment and compatible with some motorcycles. Major selling AMSOIL product and the companies FIRST product!!


Diesel Fuel Cetane BOOST – Free Power = Mileage! A must!

Transmission and drivetrain lubes

Popular – Long Life SAE 50 Transmission Oil (FTF)

Oil Filtration Bypass Kit “partial flow” for OTR Trucking.

Bypass kits for vehicles with under 15 gallon capacity

AMSOIL “Ea” Absolute Efficiency Oil Filters (Absolute @ 15-microns)

Donaldson Blue™ Series Filtration Products

AW Synthetic Hydraulic Fluids

New for 2024 the Price Saving Commercial Grade Hydraulic Oils. ISO 36, 42, and 68

Amsoil's Technical Services Director Dave Anderson
Retired AMSOIL developer Dave Anderson shows off early bypass kit.

See just how effective the By-Pass System is in your vehicle both diesel and gas by watching this recent sales presentation. The bypass filter (Partial Flow) system has attracted more lifetime customers to AMSOIL because they work.


Refuge Hauler Impressed by significant time and costs savings thanks to AMSOIL

Open brochure by clicking on the images.

See the broad-spectrum of improvements to your truck AMSOIL provides.

Save for future reference (PC users) Full color catalog 2019 

Diesel Oil Rust Test Results - Schaeffers fails
The link in the caption shows Schaeffers doesnt use batch numbers so issues cannot be tracked no ISO certification or reasonable quality control

Is an AMSOIL Commercial Account For Me?

Well, it’s free as long as your company qualifies and AMSOIL now has an additional discount system which carries over from the prior year so you save even more when you buy small amounts! Call us at 800-579-0580

Here’s a great archive field test from 1997 – If you read the last page in the 8.2% brochure (HDD 5W-30 now replaced by the DHD 5W-30) you saw how AMSOIL saved one trucking fleet $188,000 in fuel savings alone! Even if you are a small pest control operation or supplier with half a dozen vehicles calculate 5-15% savings on annual fuel expenses, cut your oil change costs by 1/3, double the life of your vehicles, Reduce component failures due to reduced heat and oxidation and save time.

AMSOIL Commercial Account holders pay the absolute lowest price for product. There are no fees, and you just order when you need product. Call 800-579-0580 for the price lists.

Customers who bought AMSOIL diesel oils also bought:

Diesel Cetane Boost Synthetic Polymeric Grease Amsoil Diesel Cold Flow
Amsoil Cetane Boost – Free Money – MPG & Power = Customers say it all – check out the reviews The grease technology that will have you writing home! Polymeric Truck Grease. Reduces Need for #1 Diesel Fuel. Small bottle treats 80 gallons.

Owners of these popular trucks should read the pages these links lead to for more AMSOIL Information:

Ford Powerstroke Recommendations  – Specific Vehicle Information

Dodge Cummins Recommendations  – Specific Vehicle Information

Chevy/GMC Duramax Recommendations – Specific Vehicle Information

* New Performance tests including other brands *

Need to be convinced?
Synthetic CostsHere’s a great article making the case for Synthetic Diesel Oils for the fleet. Mentions how the new engine oil requirements of API CK-4/SN, CJ-4, CI-4+, CF have caused the price increases to conventional while Group IV type Synthetics such as AMSOIL (mentioned in article) have not increased in price anywhere near the same pace thus clearing price from the argument.

The article shows how many other costs can be significantly reduced when using a serious oil change program. Intervals and life of beverage delivery vehicles in one instance were improved in conjunction with oil analysis.

Years ago Eaton started offering extended warranties in drivetrain products when Synthetics were used from an approved list. I remember 15 years ago when I would tell someone this they would not believe this at all as the conventional wisdom was that Synthetics were not only expensive but could cause a number of costly problems. Fortunately the nay-sayers were wrong! The Engine side of the industry has now caught up.

Archive article – Freightliner Testimonial – Excellent! – Read how AMSOIL Commercial account Gerlach Trucking of Erskine, Minnesota reduced 12 oil changes or 480 quarts to only one oil change and 40 quarts over a 212,000 mile period using the Dual Guard and Series 3000 5W30 Heavy Duty Diesel Synthetic motor oil and enjoyed increased mileage. (Use new DHD 5W-30 in today’s engines 2008 and newer where 5W-30 is allowed) Engine wear charts attached.

Witness benefits of AMSOIL Cetane Boost Additive

Diesel Fuel Economy in Stop & Go??  Read about the 2004 Freightliners  (two tested)  with Series 60 Detroit diesels. The industry-standard SAE J1376 Fuel Economy Measurement Test (Engineering Type) for Buses and Trucks reveals AMSOIL synthetic lubricants can increase fuel economy in class 8 diesel trucks used in stop-and-go city driving conditions and, in this case, did by 3.15 percent.

ALSO SEE Drivetrain Lubes. Our transmission products increase fuel economy, lower temperatures and last many times longer. Our Gear lubes have a lifetime guarantee in passenger vehicles! 

TOWING AND RECOVERY – This monster tow truck is one of Mike Tauber’s towing and recovery trucks in Linthicum Heights, Md. He says AMSOIL products keep the truck “running and running” without any mechanical problems. (See article on our home page)

Product Testimonials

Good stuff

By  JOHN,  a  Verified Buyer  from  SoCal  on  June 11, 2024
I use the 15-40 signature series in my RV with a 12.8 liter Mercedes Diesel. I noticed a difference on my way home from having the first oil change with the Amsoil. On our first trip my wife ask what I had changed. She said “the engine is quieter and smoother”. Now it’s the only oil I’ll use. Thank you for a great product.

Best oil on the market

By  DYLAN,  a  Verified Buyer  from  NY  on  June 04, 2024
Been running Amsoil in my 21 f150 3.0 diesel for over 30kmi! I’ve noticed smoother cold starts in subzero temperatures and increased fuel economy! Oil is always shipped very quick right to my door and is well packaged, they provide a nice receipt with date and time stamp which helps with keeping track of my multiple vehicles. Also they usually put a hat , flashlight, tool or sticker in the order free which is nice!

Makes my engines happy, and me happier

Famous AMSOIL story from the guy who reached 400,000 miles on AMSOIL in his Semi. One Oil Change!

Well, the reality is… Diesel maintenance is expensive, no two ways about it. With this oil I can run longer intervals with less deterioration and degradation, even on the HEUI engines I own and maintain (which works oil to the max) I have to say, with the oil analysis that I get back consistently telling me that my engines are happy to run extended change intervals ((while still changing filters at normal intervals)) I’m a happy camper, over the next ten years I’ll save tons of money.. tell me that wouldn’t make you happy.

Sharing The Miles Together

Haywood Gray and His AMSOIL Legacy

AMSOIL's notorious drain interval MACK customer.It is no coincidence that the name Haywood “Woody” Gray holds a special significance in AMSOIL circles. Gray’s story has been featured in dozens of publications including AMSOIL’s Action News, Service Line, Direct Line, a small library of brochures and pamphlets and even video tapes documenting his experiences with AMSOIL extended drain intervals. His experiences stand as an example of AMSOIL quality and cost savings for all to see.

Back in the early road trips

Haywood Gray began using AMSOIL Synthetic Heavy-Duty Diesel and Marine 15W-40 Motor Oil (AME) in the E9-400 V-8 engine of his first truck, a 1984 Mack, after the engine accumulated 45,000 miles. For 280,000 miles, Gray changed his oil at 40,000- to 60,000-mile intervals even though his oil analysis reports showed, without exception, that the oil was good for continued use.  At 325,060 miles Gray increased his oil drain interval to 100,000 miles.

The engine was torn down at 600,000 miles when Gray decided to sell the truck.  The cylinder liners, bearings, pistons, rings and oil pump, which were all treated to extended oilExtended intervals have done Gray well. drain intervals with AMSOIL, were found to be in excellent condition.

Gray continued using AMSOIL AME in the engine of his new truck, a 1990 Mack with an E7-400 engine.  He also determined that the new truck would also be the start of a new oil-draining program.  He decided that instead of using his previous 100,000-mile oil change guidelines, he would base his oil drains on the findings of a used oil analysis program.  He also installed an AMSOIL By-Pass Filtration system.

After 630,000 miles total and 409,000 miles without an oil change, the E7-400 engine was torn down by the local Mack dealership in December 1996 and its parts were examined by an engine rater from a major oil additive manufacturer.

What the team found was surprising to everyone ­except perhaps Haywood Gray.

The engine showed light to moderate wear through­out, just as an engine in similar service and lubricated with conventional petroleum oil changed at 20,000­ mile intervals would show.  In addition, according to the engine rater, the parts he examined – cylinder liners, pistons, rings, bearings, valve train components could have been put right back in the engine and would have continued to provide the good, dependable service they had provided all along.  And all this after 409,000 miles without an oil change!

So, what’s Woody doing now?

Gray now drives a 1999 Mack with an ET 460 engine, an Eaton 13 speed transmission and 386 Eaton rears.  As soon as he bought the truck it was retrofitted with AMSOIL 75W­90 Gear Lube and the engine changed over to his old favorite – AMSOIL Synthetic Heavy-Duty Diesel and Marine 15W-40 Motor Oil.  He also had a BMK-12 (BMK-30 is the new version) By-­Pass Filtration system installed.

  As of July 2003, Gray had over 330,000 miles on the engine, and has racked up 290,000 miles without an oil change.  He has decided to change filters and take oil samples at 40,000-mile intervals.  So far, the samples have shown that the oil has not needed to be changed.  Soot levels have also remained well within the recommended Mack limits.  The truck is greased with AMSOIL products every 40,000 miles when it is time for a filter change.

Gray likes to point out that his fuel mileage is a constant 7-mpg, while other truckers hauling under similar circumstances and with similar equipment average only 5.5 to 6 mpg.  But he also knows that’s just one of the many benefits AMSOIL has to offer.

AMSOIL Popular with Smart City Fleets

Smart municipalities choose AMSOIL to cut costs, extend equipment lift and save taxpayers money.

Local AMSOIL Direct Jobber Ron Ward knows his product contains the properties and value no other product can match. When it comes to bidding for government contracts Ron shows them the facts and when progressive purchasing departments listen, the taxpayers become the real winners. Because many of these towns now base their winning bids on “best value” rather than “lowest price”.

AMSOIL has been making the work a lot easier for maintenance shops and buyers alike. On the other hand, there are still many departments that rely on the cheapest products and/or their product requirements are way out of date. Other inferior synthetic products or additives have created a roadblock in their minds which end up costing us all. Luckily this trend is changing as the knowledge of true PAO synthetics, soot control and extended intervals is brought to light. Once they see transmission failures reduced by 80% in squad cars the light suddenly turns on!

Fortunately, AMSOIL’s 30-year reputation has made its mark in the Dallas – Fort Worth Metroplex. Departments such as City of Dallas, City of Lewisville, Farmers Branch, Plano, Richardson, University Park, Dallas Area Rapid Transit, Fort Worth T, Denton County and several others. When they have a problem AMSOIL becomes the obvious solution.

University Park had a serious problem with their ambulance transmissions overheating. Ron showed them the merits of the Universal ATF including the extended life and the problems ceased to exist. With some of the others, oil analysis proved beyond a shadow of a doubt that they had eliminated their costly downtime problems. Because AMSOIL is the recommended grease for new fire department equipment, it has opened doors for the rest of the product line in later bids.
Like I mentioned on the front page, AMSOIL is your ethical and economical choice for your fleet or small business.

Ches Cain – Owner – The Synthetic warehouse 1-800-579-0580