AMSOIL 5W-40 Signature Series 100% Synthetic Max-Duty Diesel Oil (3.78L)

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

Developed to protect the horsepower diesel enthusiasts crave and extend the life of hard-working commercial equipment in the most severe conditions. Signature Series synthetic technology delivers max-duty protection in on- and off-road applications.

MAXIMUM ENGINE PROTECTION

• Delivers 6X more wear protection, delivering extra protection so you can push your diesel with peace of mind
• Provides long-lasting wear protection, keeping cylinder liners looking like new
• Delivers up to 60 percent better turbo cleanliness
• Withstands the extra demands you place on the turbo when pulling heavy loads or updating the tune for maximum horsepower
• Provides up to 2X better rust protection

Delivers More Wear Protection

Third-party testing shows Signature Series Max-Duty Synthetic Diesel Oil delivers 6X more protection against wear than required by Detroit Diesel’s* standard.

AMSOIL Fights Wear

AMSOIL delivers powerful engine protection. How good is it? In third-party testing compared to a leading brand, AMSOIL provided long-lasting wear protection, keeping cylinder liners looking like new.

Keeps Turbos Clean

AMSOIL Signature Series Max-Duty Synthetic Diesel Oil provides protection boosted to the max, delivering up to 60% better turbo cleanlinessJ and withstanding the extra demands you place on the turbo when pulling heavy loads or updating the tune for maximum horsepower.

VISCOSITY CONTROL

• Resists oxidation and the thickening effects of soot contamination
• Retains viscosity after high-temperature service for maximum engine protection and efficiency
• Provides up to 76 percent less oil consumption

Reduces Oil Consumption

Signature Series Max-Duty Synthetic Diesel Oil provides up to 76% less oil consumption.

EXCELS IN EXTREME TEMPERATURES

• Provides outstanding protection and performance in hot and cold temperature extremes
• Resists thermal (heat) breakdown better than conventional and competing synthetic diesel oils.
• Stays fluid in sub-zero temperatures for easier starting, improved oil flow and reduced wear.