Product Description

OB40 SS Stroker is a versatile ashless high performance semi synthetic Two Stroke engine oil developed for marine outboards. Designed to mix easily and completely with all types of petrol in both pre-mix and oil injection systems and once mixed will not separate.

OB40 SS Stroker provides outstanding detergency in outboard water-cooled two-cycle gasoline engines giving the lowest combustion deposits. Provides excellent rust protection during extended engine storage periods. Does not contribute to pre-ignition or spark plug fouling.


Suitable for use in all fuel/oil mix Two Stroke engines, particularly outboards requiring TC-W3 grade oil mixing up to 100-1 fuel ratio, thus reducing your oil usage by half.

Note: Outboard motors running 100-1 need to be designed and tuned to specifically run on this fuel ratio.
Exceeds the current requirements of Mercury, Tohatsu, Evinrude/Johnson, Suzuki, Yamaha and Mariner.


This product formulation meets the latest TC-W3® reformulated performance specifications.

Product Registration Number: NMMA TC-W3 RL-00417J 2009


205 litre drum, 20 litre pail, 5 litre pack


Material Safety Data Sheet – OB40 2 Stroke Semi Synthetic