Franki_targa

Guys, what do you use? What runs better?

wildcat077

For everyday use i put Shell 91 octane as it has no ethanol and for track weekends i use Petro Canada 94 octane ...
Either one is good as long as it doesn't contain ethanol !

Cheers !
Phil

pkjense

Ultra 94 DOES contain ethanol up to 10%:
http://retail.petro-canada.ca/en/ind...2056.aspx#Does Ultra 94 contain ethanol? Does Petro-Canada still offer an ethanol-free gasoline?

I use vpower as it has no ethanol. Also ethanol produces less power than gasoline, so the power equivance of vpower 91 and ultra 94 is not really that much.
I don't have problems with it in either my modified 911 2.7 engine, or a modified 951 turbo. That said if I am going to run the 951 hard & long at CMP I will stop at the Ultramar in Arnprior and fill up with 98 race gas. Can't say I notice a difference, but I hate dealing with detenation carnage.
Here is a good article on the topic:
http://www.944enhancement.com/html/knock_ping.html

Matt Lane

Not an expert, but the V-Power 91 is probably best for all around use. A modernish DME will retard the timing if necessary to compensate for the lower octane than specd,

I use the 94 (with ethanol) for track only. In the heat of summer, you are not going to know about detonation issues until it's too late. Fill up, burn it (repeat as necessary), then revet back to V-Power when you are done!

Dwane

I have nothing useful to say....Just tired of seeing my buddy Matt's name in the upper right hand corner of the Rennsport section

Matt Lane

That's quite the post count for a guy that has nothing to say...

pkjense

bazinga!

jumper5836

So latest from track talk; source was Shellbourne fuels. Shell 91 does contain ethanol and the pumps have not been updated yet to reflect that they do. They were forced to comply with Canadian fuel rules that mandate that ethanol be used in all their gasoline. They had that commercial campaign with the F1 race car before saying it didn't contain ethanol and have been lying to us for quite some time.

exc911ence

Stinson's still offers 93 octane with no ethanol.

DRPM

I was told by Ultramar Quality dept that Ultramar 91 has zero ethanol.
I use it in my TT and Stihl products.

The DareDevil

I was surprised when he said that. He's right about them no longer advertising ethanol-free gasoline on their site.

Matt Lane

This blows.

Pferrf1

http://pure-gas.org/index.jsp?stateprov=ON

These guys claim to maintain a list although they also say that Cantire and Costco sell ethanol free gas.

wildcat077

That is good to know Derek ... i can now gas up the Porsche at Ultramar/Couche Tard and use my CAA card rather than exclusively at the more expensive Shell station

Cheers !
Phil

DRPM

Hey Phil
See you on Monday!
Derek