Diesel Power

Products for Maximum Performance and Protection

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For Commercial and Fleet Diesel Information, Click Here.

Motor Oil

You can't buy better protection for your hard-working diesel truck than AMSOIL synthetic Motor Oil. Whether you want the fuel economy benefits and ultra-cold temperature protection of a diesel-formulated 5W-30 or the tried-and-true protection of a 15W-40, you just can't beat AMSOIL synthetic motor oils.

AMSOIL Series 3000 Synthetic 5W-30 Heavy Duty Diesel Oil Diesel

Series 3000 Heavy Duty 5W-30 Diesel Motor Oil

In a head-to-head comparison, Series 3000 5W-30 Heavy Duty Diesel Motor Oil provided better wear protection than Delvac 1, Delo 400, Rotella T and Cummins Premium Blue (see chart). Independent laboratory testing shows up to 43 percent less wear with Series 3000 than with the other oils tested.

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Series 3000 also offers 12 TBN protection for serious long-term acid control and a stay-in-grade formulation to protect moving parts from high-temperature contact and wear throughout the oil's service life.

Series 3000 is formulated for significant fuel savings, boosting fuel economy far beyond what it would be with a conventional 15W-40 oil.

For easy cold temperature starting and dependable cold temperature protection, Series 3000 can't be beat. It's ideal for northern tier diesel owners.

Series 3000 is formulated for gasoline engines, too, making it the ideal motor oil for multi-vehicle households or fleets.

AMSOIL 15W-40 Diesel Motor Oils

AMSOIL Synthetic Heavy-Duty Diesel and Marine 15W-40 Motor Oil and AMSOIL Semi-Synthetic 15W-40 Motor Oil have been put to the test over millions of miles in heavy-duty trucks.

They are proven to provide unsurpassed engine protection, even when they are used much longer than conventional diesel oils are used. Specially blended long-life formulation resists oxidation and thermal breakdown. Outstanding lubricity provides unbeatable wear protection and maximum fuel efficiency. Contains performance additives for acid and soot control.

Extended drain capabilities reduce downtime and motor oil expense. Its unique synthetic formulation, improved detergent/dispersant capabilities, and long drain additive package ensure maximum engine protection, cleanliness and performance over extended drain periods. Its advanced 12 TBN formulation keeps engines in superb condition even when the oil is used for extended drain intervals.

AMSOIL Synthetic Diesel and Marine Oil is significantly more shear stable than conventional motor oils, retaining its viscosity at temperatures and loads that break down conventional oils. It also contains special rust and corrosion-inhibiting additives to prevent the rusting or corrosion of iron, copper, lead and aluminum materials.

Look at the graphs below. AMSOIL maintained its protective TBN and viscosity while the petroleum control rapidly lost both. More to the point, AMSOIL kept engine wear rates low. And isn't that what motor oil is all about?

AMSOIL 5W-40 Premium Synthetic Diesel Motor Oils - API CJ-4AMSOIL Synthetic 5W-40 Diesel Oil

Premium 5W-40 Diesel Oil is the premium choice diesel oil for model year 2007 and newer heavy-duty and pickup truck diesel engines requiring API CJ-4 emission quality oil standards. Withstands the stress of heat, soot and acids to help prevent deposits, corrosion and wear. Broad viscosity range offers superior protection over a wide temperature range. Recommended for the longest service interval established by the engine, vehicle or equipment manufacturer. Drain intervals may be extended based on oil analysis. Compatible with all exhaust treatment devices and designed to extend the service life of particulate filters. Replaces 5W-40, 10W-40 and 15W-40 viscosity oils and is "backwards compatible" with pre-2007 diesel engines.

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Click on Graph to Enlarge

AMSOIL: steady acid control


Class 8 Kenworth T600 tractors with
Series 60 Detroit Diesel engines.
Conventional oil changes: 20,000 miles
Oil changes extended to
56,343 mile (average) with AMSOIL.

Click on Graph to Enlarge

AMSOIL: minimal cylinder, crankshaft wear


Class 8 Kenworth T600 tractors with
Series 60 Detroit Diesel engines.
Conventional oil changes: 20,000 miles
Oil changes extended to
56,343 mile (average) with AMSOIL.

Click on Graph to Enlarge

AMSOIL: steady viscosity


Class 8 Kenworth T600 tractors with
Series 60 Detroit Diesel engines.
Conventional oil changes: 20,000 miles
Oil changes extended to
56,343 mile (average) with AMSOIL.

Click on Graph to Enlarge

AMSOIL: Minimal bearing wear


Class 8 Kenworth T600 tractors with
Series 60 Detroit Diesel engines.
Conventional oil changes: 20,000 miles
Oil changes extended to
56,343 mile (average) with AMSOIL.

Transmission Fluids and Gear Lubes

AMSOIL Synthetic Automatic Transmission Fluids and Gear Lubes deliver maximum power and fully protect hard-working drivetrains. Synthetics, of course, deliver maximum power because their molecular structure best reduces friction, a big power-eater. And they protect best, even in temperatures that gel or fry conventional lubes. That’s critical, given the incredible drivetrain heat generated by heavy-load operations and the temperature extremes in which diesels often work.

In fact, AMSOIL ATF and gear lubes provide easy, dependable cold-temperature shiftability in a fraction of the time required by conventional fluids. They actually knock high lube temperatures down to optimal ñ and outlast ordinary ATFs and lubes.

Synthetic Automotive Greases

AMSOIL Syntheic Grease

AMSOIL Synthetic Automotive Greases are extreme pressure fortified NLGI #2 CG/LB products. Each offers outstanding wear and extreme pressure protection, load carrying capacity, friction reduction, low temperature pumpability, thermal stability, storage stability, oxidation inhibition, rust and corrosion inhibition, water washout resistance and extended service life.

AMSOIL Series 2000 Synthetic Racing Grease is formulated for high-temperature/high-speed applications, such as wheel bearings. Yet, its outstanding load-bearing capacity suits it for use in low-speed bearings, such as heavy duty steering knuckles. Series 2000 synthetic Racing Grease offers the load-bearing capacity of a heavy-duty grease without sacrificing the high-temperature protection of a multi-purpose.

AMSOIL Synthetic Multi-Purpose Grease is formulated for high-speed/ high-temperature applications, such as wheel bearings. AMSOIL Synthetic Multi-Purpose Grease is also available in a handy spray formulation.

AMSOIL Synthetic Heavy Duty Grease is formulated for low speed/high load applications, such as heavy-duty steering knuckles. It is a "moly" fortified grease to handle extreme load situations.

AMSOIL Synthetic Water Resistant Grease (NLGI #1-1/2) is formulated for applications with frequent water exposure, such as boat trailer and tow vehicle wheel bearings. Testing shows AMSOIL Synthetic Water Resistant Grease loses 47 percent less mass to water spray-off and 43 percent less mass to water washout than conventional greases do.

AMSOIL Dual Remote Bypass Filter

EaBP By-Pass Filters

Engine wear is caused by dirt and agglomerated soot particles larger than 5 microns. AMSOIL EaBP Filters are high efficiency by-pass filters that also remove soot. The two stage pleated and layered cellulose/full synthetic media has an efficiency rating of 98.7 percent at two microns. These filters remove 39 percent of soot contaminants less than one micron. At normal operating RPMs the EaBP Filter will filter all of the oil in a typical five quart sump in less than 10 minutes.

EA Air Filters

The AMSOIL Ea Air Filters incorporate nanofiber technology which has been used exclusively in severe and heavy duty applications. AMSOIL Ea Filters are more efficient and have greater capacity than cellulose and wet gauze filters, effectively extending engine and filter life and reducing engine wear. Cleaning of EA Filters with a shop vacuum or law pressure shop air is recommended every 25,000 miles or one year, and they have total service life of 100,000 miles or four years.

Diesel Additives:

If you have a truck with an Allison Transmission, and don't want to pay the ridiculous prices Allison wants for their TranSynd®, check this out.

AMSOIL Diesel Concentrate Performance Fuel Additive

Total system cleaner and lubricity improver for all types of heavy and light-duty diesel engines. Formulated with Ultra Low Sulfur Diesel fuel (ULSD) in mind, Diesel Concentrate controls the problems created by EGR systems by neutralizing acids during combustion, minimizing acidic cylinder wear, reducing the rate of TBN depletion and maintaining oil quality. Cleans fuel injectors and combustion chamber for improved efficiency and better sealing and minimizes soot loading. Improves the oxidation and thermal stability of diesel fuel, improves fuel economy by up to five percent, restores horsepower and protects against water contamination. Compatible with all types of exhaust emission systems, including diesel particulate filters (DPF's). also recommended in heating oil furnace applications.

Diesel Cold Flow Improver

Recommended for low temperature applications below 40 deg. F. Effectively modifies wax crystal formation at low temperatures to depress diesel fuel pour point and improve cold flow filtration properties. Lowers the cold filter plugging point by as much as 20 deg. F and decreases the need for #1 diesel fuel diluted with kerosene. Contains jet fuel-type deicer to help prevent ice formation in fuels contaminated with water. Compatible with diesel particulate filters (DPFs).

Diesel Concentrate Plus Cold Flow Improver

Premium, year-round diesel fuel additive that provides improved efficiency and maximum cold-weather performance. Combines the superior detergency and lubricity of AMSOIL Diesel Concentrate with the excellent anti-gelling properties of AMSOIL Cold Flow Improver in one convenient package without sacrificing performance.

Cetane Boost Diesel Fuel Additive

Improves combustion efficiency to increase power in diesel engines. Raises cetane three to seven numbers. Also improves low-temperature starting, fuel ignition quality and reliability. Treats up to 160 gallons.

Diesel Recovery

Quickly and effectively dissolves the wax crystals that form when diesel fuel surpasses its cloud point. Quickly liquefies gelled diesel fuel, thaws frozen fuel filters and allows the operator to continue driving with minimal downtime. performs well in all diesel fuels, including ULSD, off-road and biodiesel. Alcohol-free and non-corrosive.