Monograde Marine Engine oil

Uno Marine 312 is a new generation, premium Marine Engine Oil suitable for use in modern medium speed trunk piston 4 stroke engines used for marine propulsion and land based DG applications. It is carefully blended from highly refined base stocks and additives that impart detergent, dispersant, anti-oxidant and anti-wear properties and posses good fuel asphalt tackling efficiency.


Uno Marine 312 is suitable for use in medium-speed trunk piston 4 stroke engines for marine propulsion and land-based DG applications running on residual/heavy fuels. UNO Marine 312 also suitable for use in Wartsila&Sulzer engines covering all the prevailing models.


Meets/Exceeds API CF specification.


  • High engine cleanliness under hotter engine conditions.
  • Maximum protections from wear and deposits.
  • Longer drain capability due to higher base number.
  • Higher degree of compatibility with fuel asphalts.

Typical physical Characteristics

TestsTest MethodUNO Marine 312
AppearanceVisualBright & clear without any sediment
Color, MaxASTM D-15003.5
Kinematic Viscosity @ 100°CASTM D-44510.5 to 12.5
Viscosity Index (min)ASTM D-227095
Specific Gravity @ 15°CASTM D-12980.890
Total Base No. mg KOH/gm, MinASTM D-289613.5
Pour Point °C MaxASTM D-97-18
COC Flash Point °C MinASTM D-92230

Health and Safety

These oils are not hazardous under normal conditions of use. For further guidance appropriate Material Safety Data Sheet may be referred.

Available Size:

210L, 50L, 26L