100 Octane

[Ciao]

Originally Posted by Flavor 987S

Here are 2 MAJOR problems with your idea/plan:

1) The 100 octane is not going to be very fresh. At a race track, yes, but NOT at your local corner gas station.

2) Unleaded race gas like this still has elevated levels of lead. If you don't beleive me, run a Blackstone UOA, and you'll see about 1-2 ppm on your next test result.

Actually (1) the pump is located near the Bandimere Race 1/4 mile race track. So, it is highly likely it is fresh. Though lead is used in racing fuels it is not used by itself, but mixed with Tetraethyl Lead. So in my example, mixing a small percentage of 100 with 91 to reach a 93 on rare occasions seems insignificant.