V.P. C-11 vs. C-12
 

We've got a 1992 Camaro J/SA car, 350 TPI. We run C-11 now, and
are happy with it. All I can get for this weekend is C-12. What should
we expect, and what should we watch for. Thanks, J.R.

Re: V.P. C-11 vs. C-12
 

The car will be slower due to higher octane in the C-12...
You may be able to lean out the carburetor and/or run a little more timing as detonation will be less of an issue...

Re: V.P. C-11 vs. C-12
 

I doubt that you will see any difference between the two fuels. I switched back and forth several times between 11 and 12 and did not see any real difference. I typically run C12 in my car.

Re: V.P. C-11 vs. C-12
 

Mine is just a tick quicker on C11, but mine has to be fattened some up to see it.
I doubt you will see much difference.

Re: V.P. C-11 vs. C-12
 

Guys, Thank You for the help. Mike & Ed, your answers this morning
were right in line with what V.P. told me this afternoon. We don't try
to complicate things, but living in Canada can have its challenges.
To get C-11 shipped to me for this weekend with freight was $50.00
a gallon. A local snowmobile racer and V.P. Dealer has fresh C-12
in stock for the "Rock Bottom" price of $25.00 a gallon. The joys of
being Canadian. Thanks again everyone. J.R.

Re: V.P. C-11 vs. C-12
 

Renegade has a fuel called Pro Crate 108 that will work very well.

Re: V.P. C-11 vs. C-12
 

Mike, I just printed NHRA's approved fuel list, looking for something else. I don't see that one listed. Lowest Renegade shown is "110+".

Re: V.P. C-11 vs. C-12
 

Renegade offers a lineup of race fuels for virtually every application, but they didn't submit all of their fuels to NHRA to be added to the accepted list. So for now, the Pro Crate 108 can only be used where the accepted fuels list doesn't apply. But Renegade may look at adding more of their fuels to the list.

Re: V.P. C-11 vs. C-12
 

Mike, I might suggest you get Renegade to do just that! Now might be the time for them to jump right in there! I use C11 and am happy with the numbers it produces but it is very expensive. I used C12 for many years in another car but never knew from one race to another if it would pass. Jim

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Re: V.P. C-11 vs. C-12
 

NHRA may not want to add any more fuel blends to the list, but we'll see.
I'll give you some info on fuel specs.
Sunoco 110 motor octane is 106
VP 110 motor octane is 107
VP C-12 motor octane is 108
The Renegade Pro 110 motor octane is over 108