Click to shop or browse AMSOIL's online store. Click to shop or browse AMSOIL's online store.

AMSOIL Synthetic 5W-40 Diesel Motor Oil meet the new standards for 2007 diesel engines and is a great choice for older diesel engines.


AMSOIL EAO Oil Filter.

Ultimate Oil Filter for Engine Protection.

AMSOIL's best oil filter is the new Ea Oil Filters featuring advanced full synthetic nanofiber technology.

"I dumped my girlfriend yesterday. She was gorgeous, had a nice body, and was faithful. But she ran regular motor oil in her car. I figure if she treats her car that way, how would she treat me?"

AMSOIL synthetic motor oil and super duty oil filters can give your car, truck, RV, motorcycle, snowmobile or boat engine the extended life, wear protection and heat protection which was originally developed for jet engines. AMSOIL synthetic motor oil and other lubricants are for those individuals who want to preserve their cars, trucks and equipment. Many automobile manufacturers require the use of synthetic motor oil in their turbocharged engines because of this additional protection.

Though AMSOIL, Inc. was founded in 1972, its story begins in the mid 1960s, when Lt. Col. A.J. "Al" Amatuzio, a jet fighter squadron commander, was impressed by the superb performance of synthetic lubricants in jet engines (in fact, only synthetics stand up to the performance demands of jet engines) and began studying their possible automotive applications. In 1972, after an intense period of research and development, Al Amatuzio introduced the first synthetic motor oil in the world to exceed API automobile service requirements.

AMSOIL synthetic motor oil provides superior protection and reduced wear while extending motor oil drain intervals to 2, 3 or 4 times the equipment manufacture's recommendations up to 25,000 miles or 1 year. Save time and money by extending the life of your vehicle by using synthetic motor oil, super duty oil filters and re-cleanable air filters.

Synthetic motor oils and high performance oil filters are highly recommended for extended engine life in turbo charged high performance gasoline engines and diesel engines such as the Dodge Cummins, Ford Power Stroke, Chevrolet Duramax and GMC Duramax.

Click each category from the table below to review the extensive list of AMSOIL products.

NEW! AMSOIL Online Product Information Guide
Click to find all recommended AMSOIL products, 
filter sizes, and lubrication capacities for your vehicle.

Kent R. Rieske
Independent AMSOIL Dealer

AMSOIL Online Store -- Click here to an place order.

1998 Dodge RAM 2500 Cummins 24-Valve

Factory engine, transmission, fuel injector pump, and computer at 252,000 miles.
Factory paint with no dings. Pictures taken in August 2014.

Auto Gas Engines Diesel Engines Motorcycles 2-Cycle Engines
Racing Filters Transmissions Gear Oils
Greases Farming Construction Accessories

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Simply place your order online and the products are shipped directly to your address from the nearest AMSOIL distribution warehouse. Ordering and delivery is quick and easy using the following links.

AMSOIL Full Product Information Page:

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2-Cycle Oil:

4-Stroke Oil:

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Racing Gear Lubricants:

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Hydraulic Oil:

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Oil Filters:

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PowerSports Filters:

Wiper Blades:

Spark Plugs and Wire Sets:

  • First to develop an API-rated 100 percent synthetic motor oil.
  • First to introduce the concept of "extended drain intervals" with a recommended 25,000-mile/1-year drain interval.
  • First U.S. company to utilize the NOACK volatility test as a standard of performance excellence.
  • First to produce synthetic motor oils for diesel engines, racing engines, turbos and marine engines.
  • First to introduce synthetic oils that legitimately contribute to improving fuel efficiency.
  • First to manufacture synthetic gear lube for automotive use.
  • First to manufacture a 100:1 pre-mix synthetic 2-cycle oil.
  • First to manufacture a synthetic automatic transmission fluid for automotive use.

The Company...

The AMSOIL corporate headquarters, manufacturing plants and chemical and test laboratories boast state-of-the-art equipment and specialists in every facet of lubricant technology. At AMSOIL, unparalleled quality standards are assured. And AMSOIL provides a full range of customer and technical services, while fourteen distribution centers throughout North America and the world keep pace with the increasing demand for AMSOIL products.

If you would like more information about AMSOIL INC., click one of the links below:


1998 Dodge Ram 2500 Quad 24-Valve Cummins Diesel with automatic transmission. Lubricated and protected throughout by AMSOIL 100% synthetic oils and lubricants. From passing cars on hot summer pulls up the continental divide to frigid winters, I wouldn't trust my investment to anything but AMSOIL synthetic products. When the turbo's hot, packin' in the air, and the Cummins rollin' out the torque, I sit back and say, "Thank you, AMSOIL."

Kent R. Rieske, P.E.
Registered Professional Engineer
Automotive and Lubrication Specialist

1998 Dodge RAM Cummins 24V Diesel
Converter Clutch Cycling Repair - Click here for the fix.

Dodge RAM 2500 Rubber Rims. Bent Wheels and Straightening Problems - Click here to read about it.

Raybestos Professional Grade Caliper Sticking Failure and Warranty Failure - Click here to read about it.

1998 Dodge RAM Cummins 24V Diesel Trucks Have Numerous and Expensive Design Flaws and Fragile Features. 
The 1998 Dodge RAM 2500 Is Wimpy.

WARNING ---- Discount TireŽ Store Could Get Your Family KILLED.

Mailing address:

Kent R. Rieske
5086 Cottonwood Drive
Boulder, CO 80301 USA
Phone: (303) 927-6937
Fax: (303) 953-9725

E-mail address:

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