Product Description:
This product gives you extraordinary protection in the diesel engines found in commercial, fleet and personal vehicles. Formulated with the latest additive and synthetic base oil technology, Amsoil Signature Series Max Duty 5W-40 Synthetic Diesel Oil far exceeds the higher performance demands of modern engines. It withstands the stress of heat, soot and acids to help prevent deposits, corrosion and wear. It is flat out the best protection for diesel applications we have ever formulated.

Meets Emission System Requirements
Amsoil Signature Series Max Duty 15W-40 Synthetic Diesel Oil is a low-sulfated ash formulation that meets the requirements for low-emission quality diesel oil and protects under the most severe conditions found in modern diesel engines. It is compatible with all exhaust treatment devices and is designed for engines equipped with diesel particulate filters (DPF).

Extended Drain Performance
Amsoil Signature Series Max Duty 15W-40 Synthetic Diesel Oil can extend drain intervals beyond those recommended for conventional petroleum oils. Its unique synthetic formulation and long-drain additive system (10.1 TBN) deliver superior engine protection, cleanliness and performance over extended drain intervals. Amsoil Signature Series Max Duty 15W-40 Synthetic Diesel Oil provides maximum protection recommended in Turbo Diesel Pickups for up to 2X the OEM-recommended drain interval not to exceed 25k miles or 1 year, Drain intervals may be extended even further with oil analysis.