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AMSOIL synthetic engine lubricants are synonymous with power and performance. They are reliable and withstand the destructive effects of long service intervals and heavy towing that destroy conventional lubricants. By reducing friction and protecting against wear, AMSOIL synthetic lubricants increase fuel economy and help keep vehicles on the job, saving you money.
Maximum engine protection
Piston ring and cylinder liner wear leads to increased oil consumption and loss of compression, resulting in reduced horsepower and fuel economy. Independent testing shows that the AMSOIL Signature Series Max-Duty line offers 6 times more wear protection, safely providing your diesel with the extra protection it deserves.
Viscosity control
Using synthetic base oils, AMSOIL Signature Series Max-Duty is naturally resistant to oxidation and the thickening effects of soot contamination. This, along with enhanced detergent/dispersant additives, keeps suspended particles separate, helping to prevent the formation of larger particles that cause wear. Viscosity increase is minimized and wear due to soot is controlled. Lower volatility also helps the Signature Max-Duty line maintain its viscosity after high temperatures for maximum engine protection and performance.
Excels in extreme temperatures
AMSOIL Signature Series Max-Duty Synthetic Diesel Oil withstands thermal breakdown better than conventional and competitive synthetic diesel lubricants. Unlike conventional lubricants, the Signature Series contains no wax, remaining fluid at sub-zero temperatures for easier starting, improved oil flow, and reduced wear.
Minimizes oil consumption
AMSOIL Signature Series Max-Duty has a low volatility rate (burn-off), reducing oil consumption during operation and passing fewer fumes into the combustion chamber. It provides up to 76% less oil consumption than required by the API CK-4 standard in the Caterpillar-1N oil consumption test.
Specifications are collected from official manufacturer websites. Please verify the specifications before proceeding with your final purchase. If you notice any problem you can report it here.