which is faster- VP C-11 or C12

[Mike Corbett]

Hey what has everyone had better luck with- VP C-11 or C-12 fuel. Just curious? Thanks for your input!

[Aubrey N Bruneau]

I just bought fuel a few days ago... wanted C11... only had C12.
He said that the C11 is for oval track racing with restrictor plates and up to 11:1 compression.
To me, that translates to a typical Stocker engine... often somewhat limited in optimum carb CFM, and modest compression ratio.... IE, cylinder pressures that are not right out there.
Sounds like C11 would be the fuel for most Stockers ?
But damn, this stuff can be hard to get around here.

If your'e under an actual 10.5:1... I'd suspect the C11 would be more efficient.

BTW, I'm no whare near the xpertise level of some of the guys here, but I DO tune...
so don't take me as the gospel... but just a few words from it

[Alan Roehrich]

What makes the most HP depends entirely upon the combination. Also, to get the most out of a particular fuel, you have to do a ton of carburetor and timing tuning. There is no easy cut and dried answer. Every combination is different, and some carburetors, if you run a carburetor, do not tune easily, and may be near impossible to get tuned to a particular fuel.

Personally, I hate C11, it always left out fuel systems filthy. I got better performance from C12, but passing fuel check was hit or miss. The price of VP fuel is absurd, considering you may get a batch that fails fuel check 2-3 times more often than it passes.

[Aubrey N Bruneau]

excellent, Alan !
I'm about to trailer 750 miles one way, to the only race I'll be able to attend, with $210.00 of fuel, that probably won't pass for qualifying ?
ah yes, this is getting better and better !

Interesting about tyhe C11. Good to know.

[Alan Roehrich]

Aubrey, the best advice I can give you with C12 is to NEVER, under ANY circumstances, allow it to be exposed to the atmosphere for long periods of time. keep it sealed up in any container you have it in. Take your jugs and turn them upside down. If they leak, either fix the leak or replace the jug. Either drain your fuel cell, or seal all the vents. If you buy it by the drum, keep the drum sealed with the bungs, and use bung wrenches.

I should, in the interest of fairness and honesty, disclose that we do not use VP C12 anymore, we're on the Sunoco program now, we use Sunoco Supreme.

[Ed Carpenter]

Originally Posted by Alan Roehrich

Aubrey, the best advice I can give you with C12 is to NEVER, under ANY circumstances, allow it to be exposed to the atmosphere for long periods of time. keep it sealed up in any container you have it in. Take your jugs and turn them upside down. If they leak, either fix the leak or replace the jug. Either drain your fuel cell, or seal all the vents. If you buy it by the drum, keep the drum sealed with the bungs, and use bung wrenches.

I should, in the interest of fairness and honesty, disclose that we do not use VP C12 anymore, we're on the Sunoco program now, we use Sunoco Supreme.

X2 on the Sunoco never had a problem.

[7423]

9.5-1 5.0 Ford. Arco 91 octane is .05 quicker than any legal race gas I have tried. Its a shame some of us have to buy something that we really don't need.

[Mike Croley]

Originally Posted by Aubrey N Bruneau

excellent, Alan !
I'm about to trailer 750 miles one way, to the only race I'll be able to attend, with $210.00 of fuel, that probably won't pass for qualifying ?
ah yes, this is getting better and better !

Interesting about tyhe C11. Good to know.

Let me make a suggestion Aubrey . As of the beginning of the year , Renegade Racing Fuels are NHRA and IHRA legal . Contact them and see if they have any dealers near you . Renegade will get you the same or better performance than you have now at a lot less money . If they don't currently have a dealer in your area , I imagine it would be well worth your while to talk to them and see about becoming a dealer . Or if you know of a shop that would be a good candidate to sell race gas , have them contact Renegade .
I know race fuel is difficult in Canada at the moment , so this would be an ideal time to make a move .