AMSOIL AMS5W40 Signature Series 5W-40 100% Synthetic Max-Duty Diesel Oil Engine Oil Additive  (946 ml)

AMSOIL Signature Series 5W-40 100% Synthetic Max-Duty Diesel Oil Outstanding extreme-pressure protection, Delivers 6X more wear protection1, Maintains proper viscosity (thickness), Minimizes oil consumption, Maximizes fuel efficiency, Excels in extreme temperatures, Confidently extend drain intervals, 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., See the Product Data Bulletin for full details., MAXIMUM ENGINE PROTECTION, A18, Provides long-lasting wear protection, keeping cylinder liners looking like new2, Delivers up to 60 percent better turbo cleanliness3, 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 protection4, 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 independent testing of AMSOIL 5W-30 Signature Series Max-Duty Synthetic Diesel Oil and a leading conventional 15W-40 diesel oil using the Detroit Diesel* DD13 Scuffing test for specification DFS 93K222., 3Based on specification standards of CAT C13 2nd Ring Top Land Carbon testing,