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100LL here in the states has a very low specific gravity, usually around .690. It also has additives to increase the shelf life to 18 months It was not design or intended to be ran much above 2700 RPM(burn time?) also so that seems to be a problem. I use to use the 115/1345 and when that went away we used the 115/130 octane. I found that all of my stock Mopar M.W. intake and exhaust valves where pitted after using that fuel for two years of drag racing only at or close to twice a month Needless to say I don't use it anymore in a high compression motor, I have mixed it with pump gas on occasion to improve the shelf life for sitting over the winter in cars that I don't drive in the winter I would not add any oil to any gas unless it was for a two stroke motor Alcholol race fuel is a different story



I agree completely with Cab. Although some people seem to like AVgas in their cars that's not what it was formulated for.