On more modern bikes that I have played with in the past few ‘ethanol years’ such as a 350 LC Yamaha, a Jawa Mustang, an MZ 301cc, and a Velosolex, I’ve had endless problems caused by ethanol. Plastic and rubber petrol pipes, taps, carburettor seals, crankcase seals, to name just a few. On Scott engines I’ve come across decaying cylinder base rings, transfer port gaskets, etc.. I bought some allegedly ethanol proof piping and it lasted three weeks ! Tank sealant the same. Why on earth can’t the petrol companies state clearly on the pumps which grades are ethanol free ?
Brian
