"Jay Honeck" wrote in message
news:CT6ce.31050$r53.24915@attbi_s21...
The ONLY time I've EVER had engine trouble has been while operating with
100
LL -- which has far more lead in it than my engine was designed to run on.

Just how much do you think "too much" is?

April 27, 2002

Pelican's Perch #55:
Lead in the Hogwash

"100LL has a maximum limit of only two grams per gallon, but in reality,
most 100LL has even less. The refineries have learned how to blend a package
that produces approximately 97-octane fuel without the lead, and they add
barely enough to bring that up to 100 plus a few more points so that they
can be sure that their product meets the minimum specification when it is
delivered. Lead is by far the most expensive component of the fuel, so they
save money by doing it that way. When 100/130 was the standard, the mix
limit was four grams of lead per gallon, but in reality the actual blends
were around 2.7, for the same reasons. (There are about 6.0 pounds, or about
2,721 grams in a gallon of 100LL, so the lead is less than 0.0735%, by
weight.)"

http://www.avweb.com/news/columns/182149-1.html