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Diesel Engine Oil

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1 - 20 of 25 products
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Signature Series Max-Duty Synthetic Diesel Oil 15W-40

Outstanding extreme-pressure protection
Delivers 6X more wear protection1
Maintains proper viscosity (thickness)
Minimizes oil consumption
Maximizes fuel efficiency
Excels in extreme temperatures

1Based on third-party testing in the Detroit Diesel DD13 Scuffing Test for specification DFS 93K222 using 5W-30 as worst-case representation

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$15.49
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Preferred Price: $12.59
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Signature Series Max-Duty Synthetic Diesel Oil 5W-40

Outstanding extreme-pressure protection
Delivers 6X more wear protection1
Maintains proper viscosity (thickness)
Minimizes oil consumption
Maximizes fuel efficiency
Excels in extreme temperatures

1Based on third-party testing in the Detroit Diesel DD13 Scuffing Test for specification DFS 93K222 using 5W-30 as worst-case representation

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$15.79
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Preferred Price: $12.79
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Signature Series Max-Duty Synthetic Diesel Oil 0W-40

Outstanding extreme-pressure protection
Delivers 6X more wear protection1
Maintains proper viscosity (thickness)
Minimizes oil consumption
Maximizes fuel efficiency
Excels in extreme temperatures

1Based on third-party testing in the Detroit Diesel DD13 Scuffing Test for specification DFS 93K222 using 5W-30 as worst-case representation

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$15.99
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Preferred Price: $12.99
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Signature Series Max-Duty Synthetic Diesel Oil 5W-30

Outstanding extreme-pressure protection
Delivers 6X more wear protection1
Maintains proper viscosity (thickness)
Minimizes oil consumption
Maximizes fuel efficiency
Excels in extreme temperatures

1Based on third-party testing in the Detroit Diesel DD13 Scuffing Test for specification DFS 93K222 using 5W-30 as worst-case representation

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$16.19
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Preferred Price: $13.09
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Signature Series Max-Duty Synthetic Diesel Oil 10W-30

Outstanding extreme-pressure protection
Delivers 6X more wear protection1
Maintains proper viscosity (thickness)
Minimizes oil consumption
Maximizes fuel efficiency
Excels in extreme temperatures

1Based on third-party testing in the Detroit Diesel DD13 Scuffing Test for specification DFS 93K222 using 5W-30 as worst-case representation

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$60.59
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Preferred Price: $49.19
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Heavy-Duty Synthetic Diesel Oil 15W-40

• Delivers 4X more wear protection1
Minimizes oil consumption
Excels in extreme temperatures
Helps keep trucks and equipment operating at peak performance
Offers outstanding value

1Based on third-party testing in the Detroit Diesel DD13 Scuffing Test for specification DFS 93K222 using 10W-30 as worst-case representation

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$10.89
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Preferred Price: $8.79
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ADPQTC-EA
$10.89
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Heavy-Duty Synthetic Diesel Oil 5W-40

• Delivers 4X more wear protection1
Minimizes oil consumption
Excels in extreme temperatures
Helps keep trucks and equipment operating at peak performance
Offers outstanding value

1Based on third-party testing in the Detroit Diesel DD13 Scuffing Test for specification DFS 93K222 using 10W-30 as worst-case representation

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$11.39
Retail Price (CAD)
Preferred Price: $9.19
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ADOQTC-EA
$11.39
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Preferred Price: $9.19
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Heavy-Duty Synthetic Diesel Oil 10W-30

• Delivers 4X more wear protection1
Minimizes oil consumption
Excels in extreme temperatures
Helps keep trucks and equipment operating at peak performance
Offers outstanding value

1Based on third-party testing in the Detroit Diesel DD13 Scuffing Test for specification DFS 93K222 using 10W-30 as worst-case representation

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$10.89
Retail Price (CAD)
Preferred Price: $8.79
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ADNQTC-EA
$10.89
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Preferred Price: $8.79
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Synthetic Diesel Oil SAE 0W-20

• Outstanding protection for smaller American diesel pickups, vans, cars and SUVs
• Delivers up to 6X more wear protection than required by a leading industry standard1
• Retains viscosity for added engine protection and increased fuel economy
• Excels in hot and cold temperature extremes
• Minimizes oil consumption

1based on third-party testing in the OM646LA cam wear test using 0W-20 as worst-case representation

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$13.99
Retail Price (CAD)
Preferred Price: $11.39
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DP020QTC-EA
$13.99
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Preferred Price: $11.39
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Synthetic Diesel Oil SAE 5W-30

• Outstanding protection for smaller American diesel pickups, vans, cars and SUVs
• Delivers up to 6X more wear protection than required by a leading industry standard1
• Retains viscosity for added engine protection and increased fuel economy
• Excels in hot and cold temperature extremes
• Minimizes oil consumption

1based on third-party testing in the OM646LA cam wear test using 0W-20 as worst-case representation

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$13.89
Retail Price (CAD)
Preferred Price: $11.29
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DP530QTC-EA
$13.89
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SAE 5W-30 LS Synthetic European Motor Oil

Designed for the unique demands of gasoline, diesel and hybrid European vehicles.
European formula features precise blend of synthetic base oils and premium additives.
Exceptional engine protection without harming emissions systems.

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$18.19
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Preferred Price: $14.79
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SAE 5W-40 MS Synthetic European Motor Oil

Premium synthetic formulation designed for the unique demands of European engines. Protects advanced emissions systems. Excellent for both gasoline and diesel engines. Fights sludge for superior engine cleanliness. Outstanding all-season performance. Designed for the extended drain intervals established by European car manufacturers. Excellent for turbochargers.

See the product data sheet for full details.

ADVANCED ENGINE PROTECTION

  • Delivers 100% synthetic engine protection for advanced automotive technology.
  • Thermally stable oil formulation resists deposit formation and cools turbochargers.
  • Formulated for long drain intervals recommended by European automakers.

Complete Coverage

  • Meets and often exceeds strict European manufacturer specifications.
  • Shear-stable synthetic base oils and high-quality anti-wear additives.
  • Outstanding protection in high-temperature conditions.
  • Dependable performance throughout long drain intervals.

Emissions System Protection

  • Precisely balanced formulations designed for use with modern exhaust treatment devices.
  • Protects sensitive emissions systems with optimal blend of SAPS (sulfated ash, phosphorus, sulfur).
  • Carefully crafted in six varieties to ensure proper emissions system function.

Excellent for Turbochargers

  • Robust composition shields engines from high temperatures produced by turbochargers.
  • Thermally stable oil formulation resists deposit formation and cools turbochargers.
  • Low pour point protects turbochargers against oil starvation in subzero temperatures.

See the product data sheet for full details.

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$15.99
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SAE 5W-40 FS Synthetic European Motor Oil

Specially Formulated for European Gasoline and Diesel Engines

AMSOIL Synthetic European Motor Oil provides exceptional performance and protection for gasoline and diesel European vehicles. It meets a wide variety of specifications and carries multiple manufacturer approvals. European Motor Oil features a broad range of viscosities and different levels of emissions system protection to keep sensitive emissions systems operating efficiently.
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$11.99
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SAE 0W-40 FS Synthetic European Motor Oil

Designed for the unique demands of gasoline, diesel and hybrid European vehicles.
European formula features precise blend of synthetic base oils and premium additives.
Exceptional engine protection without harming emissions systems.

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$14.89
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Preferred Price: $12.09
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SAE 15W-40 Heavy-Duty Diesel and Marine Oil

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.
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$16.29
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Series 3000 5W-30 Synthetic Heavy Duty Diesel Oil

Recommended for applications specifying API CI-4+ and prior specifications
Extends drain intervals and maximizes fuel economy
Controls soot-thickening and wear
Reduces oil consumption and emissions
Excels in extreme temperatures
Try Signature Series Max-Duty 5W-30 for a serious upgrade

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$17.59
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Premium Protection 20W-50 Synthetic Motor Oil

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.
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$16.09
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Premium Protection 10W-40 Synthetic Motor Oil

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.
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$16.19
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DOMINATOR 20W-50 Competition Diesel Oil

The Confidence to Compete, The Protection To Win

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.
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$65.09
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$65.09
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DOMINATOR® 5W-20 Racing Oil

Formulated specifically for racing & high-performance engines
Robust formulation resists viscosity loss
Proprietary friction modifier maximizes horsepower & torque
Fortified with anti-wear additives for extra protection

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$18.49
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RD20QT-EA
$18.49
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Synthetic Diesel Oil

Can diesel oil safely be use in gas engines?

It depends on the specifications the diesel oil carries and the recommendation of the original equipment manufacturer (OEM). The American Petroleum Institute (API) publishes its “C” category of specifications for diesel oil (currently CK-4) and its “S” category for gasoline motor oil (currently SP).

You can use diesel oil in a gas engine provided the diesel oil meets the appropriate specifications and viscosity requirements of your engine. For example, if your gas engine calls for a 5W-30 motor oil that meets the API SN specification, you can safely use a diesel oil of the correct viscosity that meets the API SN spec. For the typical gasoline application, however, a diesel oil isn’t required, and the more appropriate choice is a quality gasoline motor oil for both performance and value.

Why do diesel engines need specific oil?

Outside of differences in the fuel, the most notable difference between diesel and gas engines is the way each ignites the fuel. Diesel engines compress air in the combustion chamber until the temperature of the air increases enough to ignite the fuel (sprayed into the combustion chamber by the injector). Gasoline engines, on the other hand, use spark plugs that ignite a mixture of fuel and air at just the right time.

Diesel oil is formulated differently than gasoline oil in order to address issues specific to diesel engines, including higher engine temperatures, oxidation rates, soot levels and deposits. Find the best AMSOIL synthetic diesel oil for your application in the Product Lookup. AMSOIL diesel fuel additives also provide benefits designed to keep diesel engines operating at top performance.

How often should you perform a diesel oil change?

Refer to the vehicle owner’s manual for specific oil-change recommendations. AMSOIL synthetic diesel oils may be used beyond the OEM-recommended interval based on the service-life recommendations on the data sheets or with oil analysis. In addition, AMSOIL offers a full line of premium synthetic gear oil and transmission fluid to keep your diesel running at peak performance.