Fuel premium unleaded or unleaded

That’s interesting, I thought ethanol in petrol was a recent phenomenon. One of the problems with ethanol is that it absorbs water. There have been several threads on various Ducati forums about steel petrol tanks rusting from the inside when bikes are laid up for the winter but not drained of fuel. Another problem has been plastic tanks swelling due to the effects of ethanol. In fact there were a series of successful legal actions taken in the USA against Ducati for this problem. It can perish rubber seals and fuel pipes leading to leakages which in combination with a hot engine is less than ideal. This is usually a problem with pre — 2000 machinery.