At AGR we have remedies for the rust and solvent attack but being bikers and work with our machines, we also need to know the Burn and Detonation of the fuel. As this information is not in our toolkit we look to the internet for answers in overcoming these problems. One site that we have found interesting and informative that has been coping with 10% ethanol and higher is Harry Klemms site at www.klemvintage.com This site should not be missed if you are tuning your own engine or even for casual reading...
Currently most pumps are providing 91 'Octane' with Ethanol at 5%. We are now moving to 10% which will cause the same problems but will speed up the effects as it can attract more water/moisture from the air. It will also be more injurious to the engines of older vehicles.