Re: What gas is best?
The closest and not close at all you could get is the military has multi-fuel motorcycles that will run on most anything , gas, diesel,jet A just like the trucks they have now.The big issue is a diesel engine has to be built heavier than a comparible gas engine to deal with the 400 psi compression pressure. In the case of the military motorcycles they keep the engine weight down with the ues of exotic very expensive materials. Model airplane diesels that are designed from the beginning to be diesels work very well. Diesel conversions of nitro model engines have a history of breaking crankshafts due again to the high cylinder pressure.