Home  >  AMSOIL Motor Oil > AMSOIL Diesel Motor Oils
Buy AMSOIL diesel motor oil for Cummins, Powerstroke, and Duramax engines at the lowest prices in Canada

​Shop for AMSOIL 0W-40, 5W-40, 15W-40 and more for light and HD Diesels
​
​​LOOK UP A VEHICLE
Auto/Light Truck
Motorcycle
ATV
UTV
Snowmobile
Marine Outboard
PWC
Heavy-Duty
AMSOIL Signature Series 15W-40 100% Synthetic Max-Duty Diesel Oil
Product Code: DMEQT-EA
​Protect your investment in diesel power and confidently extend drain intervals with our top-grade synthetic diesel oil.  AMSOIL Canada's 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.  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.
AMSOIL Signature Series 5W-40 100% Synthetic Max-Duty Diesel Oil
Product Code: DEOQT-EA
​Protect your investment in diesel power and confidently extend drain intervals with our top-grade synthetic diesel oil. AMSOIL Canada's 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. 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.
AMSOIL Signature Series 0W-40 100% Synthetic Max-Duty Diesel Oil
Product Code: DZFQT-EA
​Protect your investment in diesel power and confidently extend drain intervals with our top-grade synthetic diesel oil. AMSOIL Canada's 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. 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.
AMSOIL Signature Series 5W-30 100% Synthetic Max-Duty Diesel Oil
Product Code: DHDQT-EA
​Protect your investment in diesel power and confidently extend drain intervals with our top-grade synthetic diesel oil. AMSOIL Canada's 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. 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.
AMSOIL Signature Series 10W-30 100%Synthetic Max-Duty Diesel Oil
Product Code: DTT1G-EA
​Protect your investment in diesel power and confidently extend drain intervals with our top-grade synthetic diesel oil. AMSOIL Canada's 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. 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.
AMSOIL 15W-40 Heavy-Duty 100% Synthetic Diesel Oil
Product Code: ADPQT-EA
​AMSOIL Canada's Heavy-Duty Synthetic Diesel Oil is formulated for hardworking equipment. It is engineered to provide 4X better wear protection1, giving you the edge to keep trucks and equipment operating at peak performance. Heavy-Duty Synthetic Diesel Oil offers outstanding value and provides excellent protection for customers seeking an upgrade over conventional, synthetic-blend or competing synthetic diesel oils.
AMSOIL 5W-40 Heavy-Duty 100% Synthetic Diesel Oil
Product Code: ADOQT-EA
​AMSOIL Canada's Heavy-Duty Synthetic Diesel Oil is formulated for hardworking equipment. It is engineered to provide 4X better wear protection1, giving you the edge to keep trucks and equipment operating at peak performance. Heavy-Duty Synthetic Diesel Oil offers outstanding value and provides excellent protection for customers seeking an upgrade over conventional, synthetic-blend or competing synthetic diesel oils.
​AMSOIL 10W-30 Heavy-Duty 100% Synthetic Diesel Oil
Product Code: ADNQT-EA
​AMSOIL Canada's Heavy-Duty Synthetic Diesel Oil is formulated for hardworking equipment. It is engineered to provide 4X better wear protection1, giving you the edge to keep trucks and equipment operating at peak performance. Heavy-Duty Synthetic Diesel Oil offers outstanding value and provides excellent protection for customers seeking an upgrade over conventional, synthetic-blend or competing synthetic diesel oils.
AMSOIL 0W-20 100% Synthetic Diesel Oil
Product Code: DP020QTC-EA
AMSOIL Canada's 100% Synthetic Diesel Oil is specifically formulated to protect the efficient diesel power of American diesel pickups, vans, cars and SUVs, giving you the edge to keep your vehicle operating at peak performance. It delivers outstanding value and excellent protection for customers seeking an upgrade over conventional, synthetic-blend or competing synthetic diesel oils
AMSOIL 5W-30 100% Synthetic Diesel Oil
PRODUCT CODE: DP530QTC-EA
AMSOIL 100% Synthetic Diesel Oil is specifically formulated to protect the efficient diesel power of American diesel pickups, vans, cars and SUVs, giving you the edge to keep your vehicle operating at peak performance. It delivers outstanding value and excellent protection for customers seeking an upgrade over conventional, synthetic-blend or competing synthetic diesel oils.
AMSOIL SAE 15W-40 Heavy-Duty Diesel and Marine Oil
​Product Code: AMEQT-EA
AMSOIL Canada engineered the SAE 15W-40 Heavy-Duty Diesel and Marine Oil for pre-2007 diesel engines in on-road applications as well as all model year diesel engines in off-road applications.  It's 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.
AMSOIL Premium Protection 20W-50 100% Synthetic Motor Oil
Product Code: AROQT-EA
​AMSOIL Canada's Premium Protection 20W-50 Synthetic Motor Oil is ideal for use in both diesel and gasoline engines.  It is 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 Premium Protection 10W-40 100% Synthetic Motor Oil
Product Code: AMOQT-EA
​AMSOIL Canada's Premium Protection 10W-40 Synthetic Motor Oil is 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.
AMSOIL DOMINATOR 20W-50 Competition Diesel Oil
Product Code: DCOQT-EA
​AMSOIL Canada's 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.
AMSOIL DOMINATOR 5W-20 100% Synthetic Racing Oil
Product Code: RD20QT-EA
​AMSOIL Canada's DOMINATOR 5W-20 Racing Oil provides superior performance and maximum protection in high-performance and racing applications.   DOMINATOR is engineered from advanced synthetic technology to better withstand the elevated rpm, high temperatures and shock-loading common to racing applications.
AMSOIL DOMINATOR 10W-30 100% Synthetic Racing Oil
Product Code: RD30QT-EA
​AMSOIL Canada's DOMINATOR 5W-20 Racing Oil provides superior performance and maximum protection in high-performance and racing applications.   DOMINATOR is engineered from advanced synthetic technology to better withstand the elevated rpm, high temperatures and shock-loading common to racing applications.
AMSOIL DOMINATOR 15W-50 100% Synthetic Racing Oil
Product Code: RD50QT-EA
​AMSOIL Canada's DOMINATOR 15W-50 Racing Oil provides superior performance and maximum protection in high-performance and racing applications.   DOMINATOR is engineered from advanced synthetic technology to better withstand the elevated rpm, high temperatures and shock-loading common to racing applications.
AMSOIL DOMINATOR SAE 60 100% Synthetic Racing Oil
Product Code: RD60QT-EA
​AMSOIL Canada's DOMINATOR SAE 60 Racing Oil provides superior performance and maximum protection in high-performance and racing applications.   DOMINATOR is engineered from advanced synthetic technology to better withstand the elevated rpm, high temperatures and shock-loading common to racing applications.
AMSOIL 15W-40 Commercial Grade Diesel Oil
​Product Code: SBDFTP-EA
AMSOIL Canada's Commercial Grade Diesel Oil is an advanced synthetic-blend diesel oil with greater than 50% synthetic content.   It meets or exceeds original equipment manufacturer requirements in both on- and off-road applications.
AMSOIL 10W-30 Commercial Grade Diesel Oil
Product Code: SBDTTP-EA
AMSOIL Canada's Commercial Grade Diesel Oil is an advanced synthetic-blend diesel oil with greater than 50% synthetic content.   It meets or exceeds original equipment manufacturer requirements in both on- and off-road applications.
AMSOIL 5W-30 LS 100% Synthetic European Motor Oil
Product Code: AELQT-EA
​AMSOIL Canada's European Car Formula 5W-30 Synthetic 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 Car Formula features a broad range of viscosities and different levels of emissions system protection to keep sensitive emissions systems operating efficiently.
AMSOIL 5W-40 MS 100% Synthetic European Motor Oil
Product Code: AFLQT-EA
​AMSOIL Canada's European Car Formula 5W-40 Synthetic 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 Car Formula features a broad range of viscosities and different levels of emissions system protection to keep sensitive emissions systems operating efficiently.
AMSOIL 5W-40 FS 100% Synthetic European Motor Oil
Product Code: EFMQT-EA
​AMSOIL Canada's European Car Formula 5W-40 Synthetic 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 Car Formula features a broad range of viscosities and different levels of emissions system protection to keep sensitive emissions systems operating efficiently.
AMSOIL 0W-40 FS 100% Synthetic European Motor Oil
Product Code: EFOQT-EA
​AMSOIL Canada's European Car Formula 0W-40 Synthetic 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 Car Formula features a broad range of viscosities and different levels of emissions system protection to keep sensitive emissions systems operating efficiently.
AMSOIL 0W-20 LS-VW 100% Synthetic European Motor Oil
Product Code: EZTQT-EA
​AMSOIL Canada's European Car Formula 0W-20 Synthetic 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 Car Formula features a broad range of viscosities and different levels of emissions system protection to keep sensitive emissions systems operating efficiently.
AMSOIL 0W-20 LS 100% Synthetic European Motor Oil
Product Code: AFEQT-EA
​AMSOIL Canada's European Car Formula 0W-20 LS Synthetic 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 Car Formula features a broad range of viscosities and different levels of emissions system protection to keep sensitive emissions systems operating efficiently.
AMSOIL 0W-30 MS 100% Synthetic European Motor Oil
Product Code: EOTQT-EA
​AMSOIL Canada's European Car Formula 0W-30 MS Synthetic 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 Car Formula features a broad range of viscosities and different levels of emissions system protection to keep sensitive emissions systems operating efficiently.

AMSOIL SYNTHETIC DIESEL OIL FAQ

Q:  Can diesel oil safely be use in gas engines?
A:  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

Q:  Why do diesel engines need specific oil?
A:  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.
​
Q:  How often should you perform a diesel oil change?
A:  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 Canada offers a full line of premium synthetic gear oil and transmission fluid to keep your diesel running at peak performance