Marine Diesel Trunk Piston Oil 20TBN SAE 40

Marine Diesel Trunk Piston Oil 20TBN SAE 40 is engineered for the demanding needs of trunk piston marine diesel engines operating on high-sulfur residual fuels. With a Total Base Number (TBN) of 20, this oil delivers powerful acid neutralization and corrosion protection, making it ideal for extended service intervals and harsh fuel conditions.

Its SAE 40 viscosity grade ensures durable film strength and consistent lubrication at high operating temperatures. The advanced additive package supports outstanding deposit control, cleaner pistons and liners, and reduced sludge formation — all of which contribute to improved engine reliability and reduced maintenance needs.

Formulated with high-quality base stocks, this oil delivers exceptional thermal and oxidative stability, making it a trusted choice for deep-sea marine operations and other high-load applications.

Key Benefits:

• High 20 TBN for excellent acid neutralization in high-sulfur fuel environments

• Exceptional wear and corrosion protection under severe operating conditions

• Outstanding detergency and deposit control for cleaner engine operation

• Excellent oxidation resistance for longer oil life

• Suitable for trunk piston diesel engines in marine and stationary power generation

Ideal for operators needing a SAE 40 marine system oil with high alkalinity reserve for superior protection and engine longevity.