AMSOIL®️ Diesel Engine Oil

AMSOIL Signature Series 5W-40 Synthetic Max-Duty Diesel Oil is engineered for hardworking diesel engines, offering 4X better wear protection and optimal performance in extreme conditions.

AMSOIL Signature Series 15W-40 Synthetic Max-Duty Diesel Oil is engineered for superior wear protection and performance in diesel engines, perfect for both heavy-duty and high-performance applications.

AMSOIL 15W-40 Heavy-Duty Diesel and Marine Oil is engineered for pre-2007 diesel engines in on-road and all model-year diesel engines in off-road applications. It has a high Total Base Number (TBN) of 12, controlling acids from combustion blow-by and EGR​​.

AMSOIL 15W-40 Heavy-Duty 100% Synthetic Diesel Oil offers top-tier engine protection for heavy-duty diesel applications. It's engineered for superior performance, particularly in over-the-road trucks, off-road equipment, and turbodiesel pickups​​.

AMSOIL 5W-40 Heavy-Duty Synthetic Diesel Oil offers 4x more engine protection than required by the Detroit Diesel DD13 Scuffing Test, excelling in extreme temperatures.

AMSOIL Signature Series 10W-30 Synthetic Max-Duty Diesel Oil is engineered for maximum protection and performance in diesel engines, ideal for both heavy-duty and off-road use.

AMSOIL 0W-20 Synthetic Diesel Oil is engineered for optimal performance in American diesel pickups, vans, cars, and SUVs, offering superior engine protection and efficiency.

AMSOIL 10W-30 Heavy-Duty Synthetic Diesel Oil is developed for extreme protection and performance in diesel engines, offering exceptional wear protection and efficiency.

AMSOIL 5W-30 100% Synthetic Diesel Oil minimizes oil consumption and is ideal for diesel pickups, vans, cars, and SUVs, suitable for a range of industry specifications.

AMSOIL Signature Series 5W-30 Synthetic Max-Duty Diesel Oil is crafted for optimal protection and performance in diesel engines, suitable for both on- and off-road applications.

AMSOIL DOMINATOR® 20W-50 Competition Diesel Oil is designed for high-horsepower diesel engines, offering robust protection and performance in diesel competition.

AMSOIL Signature Series 0W-40 is a synthetic diesel oil designed for maximum performance in both commercial and enthusiast applications. It's engineered to protect in severe conditions and is ideal for on- and off-road use.

AMSOIL 10W-30 Commercial-Grade Diesel Oil is a synthetic-blend oil designed for heavy-duty diesel engines, offering superior wear protection and all-season performance.

AMSOIL 15W-40 Commercial Grade Diesel Oil is a high-quality synthetic-blend designed for heavy-duty diesel engines. It offers superior wear protection, all-season performance, and is suitable for a wide range of industry specifications including API CK-4, CJ-4, CI-4+, CF​​.