S-OIL Marine SO 5 Series are high quality marine system oil, formulated from solvent-refined paraffin base oils having high thermal stability and resistance to oxidation. These inherent base oil characteristics are qugmented by a balanced additive package containing oxidation inhibitors, alkaline detergents, dispersants and antifoam agents. They have been developed specifically for use as system oils in modern high-output cross-head type marine diesel engines. They provide adequate lubricatino for bearings and other moving parts, incdluing cams and gears, plus effective cooling of pistons in cross-head engines.

S-OIL Marine SO 5 series are a high performance system oil that ensure enhanced cleanliness for two-storke, crosshead type marine diesel engines operating under severe conditions.
​

Clean crankcase and circulation tanks

Outstanding piston-cooling efficiency

Increase protection against gear and bearing load carrying

Provide Improved rust protection

Excellent water tolerance and separation

Superior FZG performance and retention without impact to demulsibility​​​

SAE 40