Saving Old Seagulls

Sorry did not mean to cause confusion ! all oil advice is good and still stands , I was concerned for reported effects of fuel changes , Perhaps I should have started a new thread ? Mr moderator perhaps you could move or delete my posts to stop confusion

Yes I am using outboard oil as recommended , my question was concerned with ethanol being added to petrol and if the ethanol would have an effect

I notice that you are based in Australia , do they add ethanol to your fuel ? and what do you mean by constant speed/load being the problem ? I have only heard of motorcycle/scooter engines being affected not outboard motors.

I have been reading about piston seizure and holing in 2T motorcycle and scooter engines caused by ethanol in the fuel washing the bores of mineral based oil, the recommended cure seems to be a pure synthetic racing oil ! . My seagull is on 10to1 mineral oil so I doubt if it would be possible to ...