Slow Speed Two-stroke Diesel Engine oil

UNOMARINECYO206 oil has been specially developed for lubrication of slow speed 2 stroke crosshead diesel engines. UNO MARINE CYO 206 is capable of demonstrating outstanding performance at the elevated peak firing pressures and liner temperatures found in modern marine two stroke engines. It has an optimum viscosity and low volatility to ensure excellent lubricant distribution and oil film retention through the use of a balanced formulation for all-round performance. UNO MARINE CYO 206 has the ability to minimize cylinder oil feed-rates whilst showcasing excellent cleanliness under sustained operation.


UNOMARINE CYO 206is suitable for use in low-speed two-stroke diesel engines’ crankshaft, oil-cooled pistons and shaft bearings wherever SAE 20 oil grade is recommended.


Suitable for use in low speed two stroke diesel engines manufactured by leading OEMs like Wartsila,MAN, Sulzer etc. covering all the prevailing models.


  • Excellent thermal and oxidation stability can lead to reduced deposits and sludge formation.
  • Outstanding detergency capability leads to potentially cleaner engine components
  • Balanced formulation with low volatility can lead to lower feed rates and reduced cylinder oil consumption.

Typical physical Characteristics

TestsTypical Values
Kinematic Viscosity @ 100 deg CMin : 10.0 Max : 12.0
Viscosity Index (min)95
Specific Gravity @ 29.5 deg C0.880
Total Base No. mg KOH/gm6
Pour Point deg C Max-9
COC Flashpoint deg C Min220

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