"Morgans" wrote in message
...

"Dudley Henriques" dhenriques@noware .net wrote in message
nk.net...
Good point!! Not sure exactly what the mix is for NASCAR, but one
thing's
for sure......it's flammable :-)))

I think it is around 115 octane. Anyone out there know for sure?

A quick google search turned up this:
http://www.motorsportsracingfuels.com/RacingFuel.html

I also remember some other racing fuels, but they didn't turn
up in a quick search.

To save you some page flipping I copied some of the numbers.

Sunoco racing fuels
Name, (R+M)/2, research, motor, color, price 54 gal drum
Standard, 110, 115, 105, purple, $281 (probably the old familiar Cam2)
Supreme, 112, 114, 110, blue, $335
Maximal, 116, 118, 114, red, $389
Max5, 116, 119, 113, lt red, $443
NOS, 117, 120, 113, lt red, $416
MO2X, 112, 115, 109, green, $424
MX114, 114, 118, 110, yellow, $???
unleaded
GT, 100, 105, 95, clear, $308
GT+, 104, 109, 99, lt blue, $314

Now, do you want to put the purple stuff in the airplane at $5.20 a gallon?
What about $7.70 a gallon for the NOS?

I also wonder what might happen if you mixed the cheaper 100LL
with the unleaded GT or GT+. Does the diluted lead content give
you an octane boost and if it does, by how much?

I won't even start on what the chemical composition of racing fuels might
do to gaskets and seals etc. on an airplane engine.

Maybe more google searches are in order.