Siemens vs. Alstom
New member
Simply enough, North American vehicles run on petrol that has an octane rating of 91 I think. If I use ethanol, with (according to Wikipedia) 129 octane, will something bad happen to the engine? Will it just run less efficiently or will it break down? I am not talking about any other part of the car than the engine. I don't care about fuel lines, etc.