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Diesel Engine Oil
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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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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Signature Series Max-Duty Synthetic Diesel Oil 0W-40
• Delivers 4X better cold-temperature performance1
• Provides long-lasting engine protection
• Maintains proper viscosity (thickness)
• Minimizes oil consumption
• Maximizes fuel efficiency
1When compared to SAE 15W-40 oil in the ASTM D5293 Cold Cranking Viscosity test
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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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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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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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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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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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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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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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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.
Warning - Click here for Proposition 65 information for this product
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SAE 5W-40 MS 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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SAE 5W-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.
Warning - Click here for Proposition 65 information for this product
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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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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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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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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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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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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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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
Warning - Click here for Proposition 65 information for this product
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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.