Originally Posted by
fly24-7
Coleman fuel does not contain Ethanol. The Ethanol in the fuel tends to dry out the diaphragm in the carburetor, requiring an occasional carb rebuilds. Put a good quality 20-25cc gas engine in the Cub. Plenty of room for the ignition and additional battery. You'll have a reliable, no hassle set-up.
That was back in the 90's. all the engines of today have ethanol friendly diaphragms