TBN-40 Marine Oil

Performace Standard: API CF


  • Prolongs Oil Change-Out Periods
    The high Base Number (BN) and superior alkalinity retention characteristics maintain sufficiently high BN under all service conditions to ensure corrosive acids formed by the combustion of fuel sulfur are effectively neutralized, thereby minimizing liner wear.
  • Reduces Maintenance Costs
    The detergent/dispersant additive system provides exceptional engine cleanliness by controlling “black sludge”, that can adversely affect both operation and maintenance in newer design engines.
  • High Power Outputs
    Outstanding thermal and oxidation stability assist the detergent/dispersant additive system in providing excellent control of high temperature deposits in areas such as the under crown of the piston and the piston ring belt area, enabling piston rings to function effectively.
  • Efficient Purifying System Performance
    The additive system effectively controls insoluble. Excellent water separation characteristics enable water to be centrifuged out with essentially no loss of additive.


  • Medium-speed trunk piston engines including latest designs in stationary power generation.
  • Medium-speed trunk piston engines (marine service).
  • Cylinder lubrication in certain trunk piston engines (with separate lubricators which supplement splash lubrication from the crank case).

Key Properties

SAE Grade 40 Test Method
Base No. mg KOH/g 40 ASTM D-2896
Sulfated Ash m% 5 ASTM D-874
Viscosity@40°C mm²/s 152 ASTM D-445
Viscosity@100°C mm²/s 15.16 ASTM D-445
Viscosity Index 100 ASTM D-2270
Flash Point COC°C 250 ASTM D-97
Pour Point°C - 12 ASTM D-92

Note: The typical characteristics are given as a guide only and may vary according to latest production according to ISO.