Signature Series Max-Duty Synthetic Diesel Oil

Signature Series Synthetic Diesel Oil 15W-40

Signature Series Synthetic Diesel Oil 5W-40

Product Code: DMEQT-EA  

Protect your investment in diesel power and confidently extend drain intervals with our top-grade synthetic diesel oil. AMSOIL 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.

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Signature Series Synthetic Diesel Oil 5W-40

Signature Series Synthetic Diesel Oil 5W - 40

Product Code: DEOQT-EA  

Protect your investment in diesel power and confidently extend drain intervals with our top-grade synthetic diesel oil. AMSOIL 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..

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Signature Series Synthetic Diesel Oil 0W-40

Signature Series Synthetic Diesel Oil 0W - 40

Product Code: DZFQT-EA  

Protect your investment in diesel power and confidently extend drain intervals with our top-grade synthetic diesel oil. AMSOIL Signature Series Max-Duty Synthetic Diesel Oil delivers 4X better cold-temperature performance when compared to SAE 15W-40 oil in ASTM D5293 cold cranking viscosity test. 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.

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Signature Series Synthetic Diesel Oil 5W-30

Signature Series Synthetic Diesel Oil 5W - 30

Product Code: DHDQT-EA  

Protect your investment in diesel power and confidently extend drain intervals with our top-grade synthetic diesel oil. AMSOIL 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.


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Synthetic Heavy-Duty Diesel Oil

Heavy-Duty Synthetic Diesel Oil 15W-40

Heavy-Duty Synthetic Diesel Oil 15W - 40

Product Code: ADPQT-EA  

AMSOIL 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.

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Heavy-Duty Synthetic Diesel Oil 5W-40

Heavy Duty Synthetic Diesel Oil 5W - 40

Product Code: ADOQT-EA  

AMSOIL 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.

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Heavy-Duty Synthetic Diesel Oil 10W-30

Heavy Duty Synthetic Diesel Oil 10W - 30

Product Code: ADNQT-EA  

AMSOIL 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.

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

Heavy Duty Diesel and Marine Oil

Product Code: AMEQT-EA  

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

Series 3000 Synthetic Heavy Duty Diesel Oil

Product Code: HDDQT-EA  

Engineered for pre-2007 diesel engines in on-road applications as well as all model year diesel engines in off-road applications.  Also engineered for all gasoline engines recommending API SL specifications including turbo-charged vehicles.  Provides superior wear protection and fuel efficiency.


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10W-30/SAE 30 Synthetic Heavy-Duty Diesel Oil

SAE Synthetic Heavy Duty Diesel Oil

Product Code: ACD1G-EA  

Exceeds both 10W-30 multi-grade and SAE 30 straight-grade viscosity requirements.  Provides outstanding performance in pre-2007 diesel engines in on-road applications as well as all model-year diesel engines in off-road apps. Also recommended for gasoline engines requiring API SL or previous specifications.


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DOMINATOR 20W-50 Competition Diesel Oil

 Product Code: DCOQT-EA

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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Diesel for Commercial Applications

 AMSOIL products are formulated to keep trucks and equipment on the job longer and reduce maintenance costs. 

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