Quote:
Originally Posted by captbilly
I have been a pilot for 40 years (military, and civilian) and I am unaware of any aviation gasoline that is unleaded. Many years ago the US switched to low lead 100 octane fuel for all piston engine aircraft. This fuel is great in older cars without catalytic converters or O2 sensors, but not usable in newer cars. I live in Sacramento and we have a few gas stations that sell 100 octane unleaded fuel at the pump. You could use this fuel in your M3 but I am not sure you would get any more power out of it. High octane fuel is only beneficial if the engine has a computer program that will take advantage of the higher detonation margins of 100 octane fuel. I have not heard of anyone who sells a high octane fuel "chip" for the M3.
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^This, I am pilot as well and you will not find straight 100 octane everything is 100LL