You need to buy AMSOIL Synthetic Diesel Oil to give your engine extra protection.  If you tow or haul or drive in hot or cold temperatures you need AMSOIL Synthetic Diesel Oil to protect your fleet.

semi tractor trailer truck hauling freight using AMSOIL Synthetic Diesel Oil

DO YOU WANT EXTRA ENGINE PROTECTION?

Independent testing shows AMSOIL Heavy-Duty Synthetic Diesel Oil delivers 4X more protection against wear*. For even greater protection, Signature Series Max-Duty Synthetic Diesel Oil provides 6X more protection against wear*.

DO YOU TOW OR HAUL?

Signature Series Max-Duty delivers up to 60% better turbo cleanliness,* effectively withstanding the extra demands you place on the turbo when hauling heavy loads or updating the tune for maximum horsepower.

DO YOU STORE YOUR VEHICLES OR EQUIPMENT?

Signature Series Max-Duty provides up to 2X better rust protection.*

DO YOU DRIVE IN HOT TEMPERATURES?

AMSOIL synthetic diesel oils retain their protective vyscocities for added engine protection in extreme temperature conditions.*

DO YOU DRIVE IN COLD TEMPERATURES?

AMSOIL synthetic diesel oils stay fluid in sub-zero temperatures for easier starting,
improved oil flow and reduced wear. Signature Series 0W-40 has a broad
vyscocity range that offers 4X better cold cranking ability than a 15W-40.

DO YOU OWN A HIGH-MILEAGE VEHICLE?

Heavy-Duty Synthetic Diesel Oil provides up to 66% less oil consumption, while Signature Series Max-Duty provides up to 76% less oil consumption.*

*Based on independent testing in the Detroit Diesel DD13 Scuffing Test for specification DFS 93K222 using 10W-30 as worst-case representation.

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

*Based on specification standards of CAT C13 2nd Ring Top Land Carbon testing.

*Based on industry standard testing using the NMMA FC-W Rust Test.

*Than required by the API CK-4 standard in the Caterpillar-1N oil consumption test.

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