AMSOIL Full Synthetic Heavy-Duty Oil

Power through the toughest jobs with AMSOIL Heavy-Duty Synthetic Diesel Oil. Designed for the hardworking and heavy-duty diesel engines, AMSOIL offers unmatched protection and performance. Its robust synthetic formula delivers 4X more wear protection, ensuring your equipment operates reliably even under severe conditions. Keep your trucks and heavy machinery running at peak efficiency with a lubricant that’s engineered to reduce maintenance costs and downtime.

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  • AMSOIL Signature Series 5W-30 100% Synthetic Max-Duty Diesel Oil

    • Outstanding extreme-pressure protection Delivers 6X more wear protection1Maintains 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

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  • AMSOIL Signature Series 0W-40 100% Synthetic Max-Duty Diesel Oil

    • 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

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  • AMSOIL Signature Series 10W-30 100% Synthetic Max-Duty Diesel Oil

    • 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

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  • AMSOIL Signature Series 15W-40 100% Synthetic Max-Duty Diesel Oil

    • 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 Details

  • AMSOIL Signature Series 5W-40 100% Synthetic Max-Duty Diesel Oil

    • Outstanding extreme-pressure protection Delivers 6X more wear protection1Maintains 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

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  • AMSOIL 5W-40 Heavy-Duty 100% Synthetic Diesel Oil

    • Delivers 4X more wear protection1Minimizes oil consumptionExcels in extreme temperaturesHelps keep trucks and equipment operating at peak performanceOffers 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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  • AMSOIL 10W-30 Heavy-Duty 100% Synthetic Diesel Oil

    • 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 Details

  • AMSOIL 15W-40 Heavy-Duty 100% Synthetic Diesel Oil

    • 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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  • AMSOIL DOMINATOR® 20W-50 Competition Diesel Oil

    The Confidence to Compete, The Protection To Win

    • Specifically designed for high-HP diesel engines
    • Outstanding bearing protection under extreme loading
    • Delivers 50% more film thickness1
    • Robust viscosity control
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  • AMSOIL 10W-30 Commercial-Grade Diesel Oil

    • Delivers 2X more wear protection1
    • Contains greater than 50% synthetic base oil
    • Provides excellent protection for an outstanding value
    • Offers an upgrade over conventional diesel oil

    1Based on third-party testing in the Detroit Diesel DD13 Scuffing Test for specification DFS 93K222

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  • AMSOIL 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
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  • AMSOIL 15W-40 Commercial Grade Diesel Oil

    • Delivers 2X more wear protection1
    • Contains greater than 50% synthetic base oil
    • Provides excellent protection for an outstanding value
    • Offers an upgrade over conventional diesel oil

    1Based on third-party testing in the Detroit Diesel DD13 Scuffing Test for specification DFS 93K222

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  • AMSOIL Signature Series Multi-Vehicle 100% Synthetic Automatic Transmission Fluid

    • Withstands the rigors of heavy towing, elevated temperatures and challenging terrain
    • Remains fluid in sub-zero temperatures
    • Provides reserve protection during heavy use and abuse
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  • AMSOIL Signature Series Fuel-Efficient 100% Synthetic Automatic Transmission Fluid

    • Withstands the rigors of heavy towing, elevated temperatures and challenging terrain
    • Remains fluid in sub-zero temperatures
    • Provides reserve protection during heavy use and abuse
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  • AMSOIL OE Multi-Vehicle 100% Synthetic Automatic Transmission Fluid

    • Protects against wear
    • Resists harmful sludge
    • Excellent cold-weather performance
    • Guards against leaks
    • Promotes smooth, shudder-free shifts
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  • AMSOIL OE Fuel-Efficient 100% Synthetic Automatic Transmission Fluid

    AMSOIL OE Synthetic Automatic Transmission Fluid provides passenger-car/light-truck transmissions excellent wear protection, sludge resistance and extreme-temperature performance throughout original equipment manufacturer (OEM)-recommended drain intervals.

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  • AMSOIL SEVERE GEAR® 75W-90 100% Synthetic Gear Lube

    • Advanced protection against wear
    • Controls thermal runaway
    • Protects against rust and corrosion
    • Helps reduce operating temperatures
    • Long oil, seal & equipment life
    • Contains friction modifiers for limited-slip applications
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  • AMSOIL SEVERE GEAR® 75W-110 100% Synthetic Gear Lube

    • Advanced protection against wear
    • Controls thermal runaway
    • Protects against rust and corrosion
    • Helps reduce operating temperatures
    • Long oil, seal & equipment life
    • Contains friction modifiers for limited-slip applications
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  • AMSOIL SEVERE GEAR® 75W-140 100% Synthetic Gear Lube

    • Advanced protection against wear
    • Controls thermal runaway
    • Protects against rust and corrosion
    • Helps reduce operating temperatures
    • Long oil, seal & equipment life
    • Contains friction modifiers for limited-slip applications
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  • AMSOIL 75W-90 Long Life 100% Synthetic Gear Lube

    • Specifically engineered for 500,000-mile (805,000 km) service life in over-the-road trucks
    • High-load gear and bearing protection
    • Protection from rust and corrosion
    • Better cold-weather shifting
    • Improved efficiency
    • Improved seal life
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  • AMSOIL 80W-140 Long Life 100% Synthetic Gear Lube

    • Specifically engineered for 500,000-mile (805,000 km) service life in over-the-road trucks
    • High-load gear and bearing protection
    • Protection from rust and corrosion
    • Better cold-weather shifting
    • Improved efficiency
    • Improved seal life
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  • AMSOIL Torque-Drive® 100% Synthetic Automatic Transmission Fluid

    For use in Allison, MAN, Voith, ZF and other heavy-duty transmissions

    • Fights thermal and oxidative degradation
    • Combats sludge and varnish formation
    • Protects against viscosity sheardown
    • Flows quickly in extreme cold
    • Delivers excellent friction stability
    • Provides long oil life
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  • AMSOIL SAE 10W 100% Synthetic Powershift Transmission Fluid

    Advanced Formulation for Powershift and Manual Transmissions, Wet Brakes and Final Drives

    • Helps eliminate clutch glazing and vibration
    • Protects against gear and bearing wear
    • Helps keep components clean
    • Guards against rust and corrosion
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  • AMSOIL SAE 30W 100% Synthetic Powershift Transmission Fluid

    Advanced Formulation for Powershift and Manual Transmissions, Wet Brakes and Final Drives

    • Helps eliminate clutch glazing and vibration
    • Protects against gear and bearing wear
    • Helps keep components clean
    • Guards against rust and corrosion
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  • AMSOIL SAE 50 100% Synthetic Powershift Transmission Fluid

    Advanced Formulation for Powershift and Manual Transmissions, Wet Brakes and Final Drives

    • Helps eliminate clutch glazing and vibration
    • Protects against gear and bearing wear
    • Helps keep components clean
    • Guards against rust and corrosion
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  • AMSOIL SAE 50 Long Life 100% Synthetic Transmission Oil

    Specifically Engineered for 500,000-Mile Service in Over-The-Road Trucks

    • Maximizes gear and bearing life
    • Helps operators save money
    • Promotes smooth shifts
    • Helps extend seal life and prevent leaks
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