GP MARGEN Marine Trunk Piston Engine Oil specially designed for modern Medium Speed 4-stroke
Marine Diesel Engines running on Intermediate Fuel Oil (IFO) or Heavy Fuel Oil (HFO)
Product Description:
GP MARGEN MARINE is a trunk piston engine oil designed for use in medium speed diesel engines
operating on residual fuels in marine, power generation and industrial applications. The superior additive
technology used in this oil provides excellent engine cleanliness & wear protection under different
operating conditions. This oil is available in SAE 30 & 40 viscosity grades with a BN (Base Number)
ranging from 30 to 55. These oils exhibit a high degree of water tolerance and have better water separation
and base retention properties. These oils meet the performance requirements of API CF.


Features & Benefits:
• Excellent detergency and dispersancy reduces build-up of soot & black sludge and keeps the engine
• Acidic by-products are effectively neutralised and the engine is protected from corrosive wear.
• Better demulsibility characteristics ensure water separation leading to trouble free operation.
• Robust anti-wear technology provides protection against piston & linear wear and good gear performance
leading to reduction in maintenance costs.
• Improved thermo-oxidative stability retards oil degradation facilitating extended oil life.
• Recommended for medium speed diesel engines in marine, power generation and industrial applications
operating on residual fuels. \
• GP MARGEN 3055 & 4055 with a BN of 55 are specifically formulated for engines operating on high
sulphur residual fuels. These oils are also specially recommended for those engines where the frequency of
topping-up/replenishment is less frequent.
• GP MARGEN 3040 & 4040 with a BN of 40 are suitable for engines operating on residual fuels having
sulphur content up to 4.5%
• GP MARGEN 3030 & 4030 with a BN of 30 are suitable for engines operating on residual fuels having
sulphur content up to 3.5 %
• Also recommended for general lubrication of shipboard equipment where specialised lubricants are not
required or use of API CF quality oils are adequate


GP MARGEN TPEO SERIES 3030 4030 3040 4040 3055 4055
Typical properties
Test Parameters ASTM
Typical Values
Viscosity @ 100 0C, cSt D 445 11.12 14.6 11.12 14.6 11.12 14.6
Viscosity Index D 2270 106 107 106 107 106 107
Flash Point, 0C D 92 >218 >218 >218 >218 >218 >218
BN, mg KOH/g D 2896 30 30 40 40 55 55
Pour Point, 0C D 97 -18 -18 -18 -18 -18 -18
Density @ 15 0C, kg/l D 4052 0.899 0.905 0.905 0.91 0.913 0.915