Marine Diesel Trunk Piston Oil 12TBN SAE 40

Our Marine Diesel Trunk Piston Oil 12TBN SAE 40 is designed for trunk piston diesel engines operating on low- and medium-sulfur residual or distillate fuels. With a Total Base Number (TBN) of 12, this oil provides balanced acid-neutralizing capability to prevent corrosion, while maintaining engine cleanliness and minimizing deposit formation.

The SAE 40 viscosity grade ensures a strong lubricating film under continuous high-load and high-temperature conditions, protecting bearings, liners, and pistons from wear. This system oil is blended with premium base stocks and advanced additive technology to deliver outstanding oxidation resistance, deposit control, and extended oil life, even in severe marine environments.

Key Benefits:

• 12 TBN for excellent corrosion protection and deposit control

• Robust thermal and oxidation stability for extended oil life

• Superior wear protection in high-load conditions

• Maintains engine cleanliness, reducing maintenance downtime

• Ideal for marine trunk piston engines using low- or medium-sulfur fuels

Perfect for marine operators seeking a SAE 40 system oil with 12 TBN for optimized engine protection and performance.