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#11
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![]() "Bela P. Havasreti" wrote in message news ![]() Perhaps a more useful comparison would be how much lead is/was in 80/87 vs 100LL? Those of use with older, low compression engines that were designed to run on 80/87 may be introducing 4 times the amount of lead into our combustion chambers by running 100LL than the original designers had intended for. 80/87 has a maximum of 0.5 grams of lead per US gallon while 100LL has a maximum of 2.0 grams of lead per US gallon. Unleaded Mogas is... well... Unleaded! In reading about this somewhere (AvWeb? EAA?) I recall words to the effect that the refineries can get up to about 97 octane without any lead, and they only add as much in to get to (or slightly exceed) the 100 octane rating. This one: http://www.avweb.com/news/columns/182149-1.html |
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