Quote:
Originally Posted by rotorwrench
A person used to be able to purchase 80/87 for lower compression engines but those days are long gone. 100LL is one of the most stable fuels there is obviously due to it's intended purpose. It is called low lead but it still has more TEL than any normal auto fuel. I've had trouble with lead fouling on 10:1 compression aircraft engines so a person should expect some on low compression engines. It will work but it's overkill on most antique engines with low compression. The price is high and it's a PITA to buy. You won't find it an the local stop & rob.
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Rotorwrench, Now you've got me curious. What little I know about aircraft engines has led me to believe that 10 to 1 was way too much compression for an engine running under constant heavy load (wide open or nearly wide open), especially air cooled and/or super/turbocharged. Are you referring to aero-race engines like in the Reno Air Races? Thanks!