Big to small, new to old, on-road to off-road, daily driver to racing, we offer premium-quality synthetic diesel oils for any diesel engine and mixed fleets.
Mixed Fleets
Signature Series 5W-30 is a versatile oil aimed at mixed fleets of diesel and gasoline vehicles, simplifying maintenance and lubricant inventory.
- 6X more engine protection1
- Outstanding cold-temperature performance
- Extended-drain capability maximizes convenience and minimizes downtime
AMSOIL Signature Series Max-Duty 10W-30 Synthetic Diesel Oil
AMSOIL Heavy-Duty 10W-30 Synthetic Diesel Oil
Newer Over-the-Road Trucks
Smaller Off-Road Equipment
Turbodiesel Pickups
Many newer over-the-road trucks and turbodiesel pickups come factory-filled with 10W-30 for improved fuel economy. Signature Series 10W-30 and Heavy-Duty 10W-30 are ideal for customers who want to maintain the improved fuel efficiency afforded by a 10W-30. They also provide outstanding protection for smaller off-road equipment and newer over-the-road trucks calling for a 10W-30.
Heavy-Duty 10W-30
- 4X more engine protection2
- Excellent opportunity for price-conscious customers to move up to AMSOIL quality
- Outstanding protection for OEM-recommended drain intervals
Signature Series 10W-30
- 6X more engine protection1
- Ideal for customers seeking the ultimate wear protection in severe operating conditions
- Extra protection for extended drain intervals
AMSOIL Signature Series Max-Duty 5W-40 Synthetic Diesel Oil
AMSOIL Heavy-Duty 5W-40 Synthetic Diesel Oil
Turbodiesel Pickups
Over-the-Road Trucks
Heavy Equipment
Signature Series 5W-40 and Heavy-Duty 5W-40 are ideal for turbodiesel-pickup, over-the-road-truck and heavy-equipment owners who want the cold-weather and fuel-economy benefits of a 5W and the protection benefits of an SAE 40.
Heavy-Duty 5W-40
- 4X more engine protection2
- Excellent opportunity for price-conscious customers to move up to AMSOIL quality
- Outstanding protection for OEM-recommended drain intervals
Signature Series 5W-40
- 6X more engine protection1
- Ideal for customers seeking the ultimate wear protection in severe operating conditions
- Extra protection for extended drain intervals
Vehicles and Equipment Operating in Cold Climates
Signature Series 0W-40 is formulated specifically for diesel applications operating in extreme cold, helping engines turn over faster and reducing startup wear.
- 4X better cold-temperature performance3
- Provides outstanding protection and performance
- Extra protection for extended drain intervals
AMSOIL Signature Series Max-Duty 15W-40 Synthetic Diesel Oil
AMSOIL Heavy-Duty 15W-40 Synthetic Diesel Oil
Over-the-Road Trucks
Off-Road Equipment
Turbodiesel Pickups
Signature Series 15W-40 and Heavy-Duty 15W-40 are the primary recommendations for most on- and off-road heavy-duty diesel applications in the marketplace; 15W-40 is the most widely used viscosity in the diesel world.
Heavy-Duty 15W-40
- 4X more engine protection2
- Excellent opportunity for price-conscious customers to move up to AMSOIL quality
- Outstanding protection for OEM-recommended drain intervals
Signature Series 15W-40
- 6X more engine protection1
- Ideal for customers seeking the ultimate wear protection in severe operating conditions
- Extra protection for extended drain intervals
AMSOIL 0W-20 100% Synthetic Diesel Oil
AMSOIL 5W-30 100% Synthetic Diesel Oil
Smaller Diesel Pickups, Vans, Cars and SUVs
AMSOIL 100% Synthetic Diesel Oil is engineered to provide industry-leading protection and performance for smaller diesel pickups, vans, cars and SUVs requiring the following specifications:
0W-20
GM dexosD*
5W-30
GM dexosD, dexos2; Chrysler MS-11106; Ford WSS-M2C214-B1; ACEA C3
Not for use in applications that require an API CK-4 (or prior) specification.
- 6X more engine protection4
- Helps extend engine life and reduce maintenance costs and downtime
- Outstanding protection for OEM-recommended drain intervals
Modified, Competition Diesel Engines
DOMINATOR 20W-50 Synthetic Competition Diesel Oil is engineered for modified, competition diesel engines and the high-horsepower demands of sled pulling, dyno runs and drag racing.
- Delivers 50% more film thickness5
- Jacked with extra zinc and phosphorus for bulletproof wear protection
- Provides professionals and enthusiasts with the power, protection and confidence needed to win
See the AMSOIL Diesel-Oil product pages and data sheets at AMSOIL.com/AMSOIL.ca for further technical details.
1Based on third-party testing in the Detroit Diesel DD13 Scuffing Test for specification DFS 93K222 using 5W-30 as worst-case representation.
2Based on third-party testing in the Detroit Diesel DD13 Scuffing Test for specification DFS 93K222 using 10W-30 as worst-case representation.
3When compared to SAE 15W-40 in ASTM D5293 Cold-Cranking Viscosity test.
4Based on third-party testing in the OM646LA cam wear test using 0W-20 as worst-case representation.
5Compared to the 3.5cP HTHS limit for SAE 15W-40.
More in our diesel oil and maintenance guide
Diesel oil
- How Often to Change Diesel Oil
- Can I Use Diesel Oil in My Gas Engine?
- Diesel Engine Oil Specifications: Making Sense of CK-4 & FA-4
- Biodiesel’s Impact on Diesel Oil
- Do Diesel Engines Burn Oil?
- Which AMSOIL Diesel Oil Should I Use in a Competition Engine?
- AMSOIL Freedom Series Diesel Oil
- Want the Best Diesel Oils for Your Vehicle?
- Big Protection for Smaller Diesel
- Top Protection for Competition Diesels
Fuel, cold weather and cooling
- How to Protect Your Diesel in Cold Weather: Oil, Fuel and Coolant
- How to Prevent Diesel Fuel Gelling in Cold Weather
- Prevent diesel-fuel gelling this winter
- Superior Diesel Cold-Temperature Protection
- Why Does Diesel Fuel Need Additives?
- What Is Diesel Cetane and Why Does It Matter?
- A Closer Look at Diesel Fuel Systems
- A Closer Look at Biodiesel
- Do I need a Diesel Coolant Additive?
Performance and ownership
- Extend Turbodiesel Engine Life
- Top 5 Tips for Protecting Your Diesel
- 3 Ways To Boost Diesel Truck Performance
- The Diesel Upgrade that Should Top Your List
- How to Increase Torque in a Diesel Engine
- Diesel vs. Gas Engines: What’s the Difference?
- Why You Should Consider Buying a Diesel
- McDonald’s or KFC: Should I Run Vegetable Oil in My Diesel?
Comments
Joel Youngman is Lead Technical Writer at AMSOIL and associate editor of AMSOIL Magazine. He develops and edits content covering lubricant technology, product testing, vehicle systems, maintenance practices and equipment applications. Youngman also coordinates magazine articles and Tech Talk columns, working with engineers, product specialists and Communications personnel to maintain technical accuracy, editorial consistency and clear customer communication.
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