I know in the past it was common to see posted "May contain up to 10% methanol' on the pumps. Is this still a requirement in the US? All my small motors have been run on high test only. Habit I guess. I know lots of guys who use regular with no problems. I haven't taken any special precautions except filtering the fuel on fill up of the model, emptying the fuel tank at the end of the day and running the engine dry. Same as I do with my nitro motors.
Be aware changing the oil content or even brand of oil can cause a change in viscosity of the fuel and the carb may need a little fine tuning. Once you get it running to your satisfaction try not to change anything. Use the same oil and mix and you should be fine.
Dennis
PS this is what works for me not the only or best way to do things.
Last edited by Propworn; 09-18-2016 at 08:09 AM.