Ampa,


For this engine, the manufacturer specifies 20% Castor oil. No less!

From my own experience, you can use fuel containing 20% synthetic/Castor oil mix, of which half is Castor oil.
The remainder must be good quality synthetic oil, produced specifically for use in methanol burning, model engines.

MVVS only allows less oil (10-15%) in its larger 26 cc and 35 cc glow engines and for all its spark ignition gas engines.


I am unfamiliar with the type of synthetic oil that you used, but what you have experienced in your Super Tigre G 15 cc, could be a result of using insufficient, or substandard oil in your fuel.

Don't even try this on your new MVVS!


I know there are some in RCU, who will swear on their Motul Micro and Aerosynth II/Aerosave, that 12%-15% synthetic oil is enough.
It will, however, cost you too much and the loss of the engine's warranty to try it.

So just don't.