Originally Posted by Loutre
the 1200 has other problems. don't worry the f800gs is a great bike. But since we are experiencing a new theory, did you use the ethanol 10 thing?
Pretty much all gas stations in my area have the ethanol added. But every chance I got on the way to Alaska I would get the nothing added good stuff. The crack is small at this point, but the length of the right side. Could octane rating be an issue?
I ask because it takes more heat to ignite a higher octane fuel meaning it won't expand as much as the lower octane fuels less than 89 in the fuel tank. Does that make sence?