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Agriculture Diesel Engine Oil

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  • Signature Series Max-Duty Synthetic Diesel Oil 15W-40

    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
    • Confidently extend drain intervals

       

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

    View Detail Page
    Current price:

    $17.99

    Retail Price (CAD)
    Preferred Price: $14.79
    Save: $3.20 Learn More
    Current price:

    $17.99

    Retail Price (CAD)
    Preferred Price: $14.79
    Save: $3.20 Learn More
  • Signature Series Max-Duty Synthetic Diesel Oil 5W-40

    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
    • Confidently extend drain intervals

       

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

    View Detail Page
    Current price:

    $17.99

    Retail Price (CAD)
    Preferred Price: $14.79
    Save: $3.20 Learn More
    Current price:

    $17.99

    Retail Price (CAD)
    Preferred Price: $14.79
    Save: $3.20 Learn More
  • Signature Series Max-Duty Synthetic Diesel Oil 0W-40

    Signature Series Max-Duty Synthetic Diesel Oil 0W-40


    4.8 star rating
    • Outstanding extreme-pressure protection
    • Delivers 6X more wear protection1
    • Maintains proper viscosity (thickness)
    • Minimizes oil consumption
    • Maximizes fuel efficiency
    • Excels in extreme temperatures
    • Confidently extend drain intervals

       

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

    View Detail Page
    Current price:

    $17.99

    Retail Price (CAD)
    Preferred Price: $14.79
    Save: $3.20 Learn More
    Current price:

    $17.99

    Retail Price (CAD)
    Preferred Price: $14.79
    Save: $3.20 Learn More
  • Signature Series Max-Duty Synthetic Diesel Oil 5W-30

    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
    • Confidently extend drain intervals

       

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

    View Detail Page
    Current price:

    $17.99

    Retail Price (CAD)
    Preferred Price: $14.79
    Save: $3.20 Learn More
    Current price:

    $17.99

    Retail Price (CAD)
    Preferred Price: $14.79
    Save: $3.20 Learn More
  • Signature Series Max-Duty Synthetic Diesel Oil 10W-30

    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
    • Confidently extend drain intervals

       

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

    View Detail Page
    Current price:

    $17.99

    Retail Price (CAD)
    Preferred Price: $14.79
    Save: $3.20 Learn More
    Current price:

    $17.99

    Retail Price (CAD)
    Preferred Price: $14.79
    Save: $3.20 Learn More
  • Heavy-Duty Synthetic Diesel Oil 15W-40

    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

    View Detail Page
    Current price:

    $12.09

    Retail Price (CAD)
    Preferred Price: $9.89
    Save: $2.20 Learn More
    Current price:

    $12.09

    Retail Price (CAD)
    Preferred Price: $9.89
    Save: $2.20 Learn More
  • Heavy-Duty Synthetic Diesel Oil 5W-40

    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

    View Detail Page
    Current price:

    $12.09

    Retail Price (CAD)
    Preferred Price: $9.89
    Save: $2.20 Learn More
    Current price:

    $12.09

    Retail Price (CAD)
    Preferred Price: $9.89
    Save: $2.20 Learn More
  • Heavy-Duty Synthetic Diesel Oil 10W-30

    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

    View Detail Page
    Current price:

    $12.09

    Retail Price (CAD)
    Preferred Price: $9.89
    Save: $2.20 Learn More
    Current price:

    $12.09

    Retail Price (CAD)
    Preferred Price: $9.89
    Save: $2.20 Learn More
  • SAE 15W-40 Heavy-Duty Diesel and Marine Oil

    SAE 15W-40 Heavy-Duty Diesel and Marine Oil


    • Recommended for applications specifying API CI-4+ and prior specifications
    • Controls soot and wear
    • Reduces oil consumption and emissions
    • Delivers maximum engine protection over extended drain intervals
    • Provides outstanding protection and performance in temperature extremes
    • Try Signature Series Max-Duty 15W-40 for a serious upgrade

    View Detail Page
    Current price:

    $18.89

    Retail Price (CAD)
    Preferred Price: $15.49
    Save: $3.40 Learn More
    Current price:

    $18.89

    Retail Price (CAD)
    Preferred Price: $15.49
    Save: $3.40 Learn More
  • Premium Protection 20W-50 Synthetic Motor Oil

    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.
    View Detail Page
    Current price:

    $19.69

    Retail Price (CAD)
    Preferred Price: $16.19
    Save: $3.50 Learn More
    Current price:

    $19.69

    Retail Price (CAD)
    Preferred Price: $16.19
    Save: $3.50 Learn More
  • Premium Protection 10W-40 Synthetic Motor Oil

    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.
    View Detail Page
    Current price:

    $18.79

    Retail Price (CAD)
    Preferred Price: $15.39
    Save: $3.40 Learn More
    Current price:

    $18.79

    Retail Price (CAD)
    Preferred Price: $15.39
    Save: $3.40 Learn More
  • 15W-40 Commercial Grade Diesel Oil

    15W-40 Commercial Grade Diesel Oil


    Advanced synthetic-blend diesel oil with greater than 50% synthetic content. Meets or exceeds original equipment manufacturer requirements in both on- and off-road applications.

    View Detail Page
    Current price:

    $97.25

    Retail Price (CAD)
    Preferred Price: $80.55
    Save: $16.70 Learn More
    Current price:

    $97.25

    Retail Price (CAD)
    Preferred Price: $80.55
    Save: $16.70 Learn More
  • 10W-30 Commercial-Grade Diesel Oil

    10W-30 Commercial-Grade Diesel Oil


    Advanced synthetic-blend diesel oil with greater than 50% synthetic content. Meets or exceeds original equipment manufacturer requirements in both on- and off-road applications.

    View Detail Page
    Current price:

    $97.25

    Retail Price (CAD)
    Preferred Price: $80.55
    Save: $16.70 Learn More
    Current price:

    $97.25

    Retail Price (CAD)
    Preferred Price: $80.55
    Save: $16.70 Learn More
Spend $75 get an AMSOIL cuffed beanie for $5. Use Code: BEANIE. Order Now. *Exclusions apply.

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.