I just went to fill up my cans with VP 100 octane for my weekend at the track and about **** my pants when I saw the price! $7.99.9 per gallon. Two weeks ago it was $5.99 and two months ago it was $4.00...

F'ing George Bush!!!

 

The price of Octane is going up!!!

 

That is just crazy price gouging. If 93-94 is $3.20 ish a gallon. There is no justification for $8.00.
I could see $5 ish...

 

HDDP (or other 100 Octane users), just wanted to ask how much of a difference 100 Octane made, and what the difference was, also what's you normal fuel?

Also do you know the composition of the fuel ie how the 100 Octane is reached in terms of additive.

I think BP Ultimate in the UK forecourts is 98 Octane, I think it came in when F1 were made to use fuel very similar to road fuel. 98 seems to be the highest available outside of tracks, forecourts used to have 5 star which was 100 Octane leaded fuel.

Malcolm

 

You're asking a way too technical question for my little pea brain... If you want the composition and specific gravity of the 100 octane I use for the track go to VP Racing Fuel or Trick Racing Fuel websites. That's the stuff I use for the track. I use 93 octane for daily driving. The reason I use this is because my ECU has been modified for higher octane fuel. The timing has been advanced.

 

I thought you might have a modified ECU, mostly just interested in the differences between fuel for track use and the forecourt - ie how much is hype vs. real advantages. Lets just say I am skeptical of the fuel company marketing.

 

If I were to guess, I think maybe I can shave 0.25 seconds off my lap times by using 100 octane. Not really much of an advantage, but every little bit helps. The stock Crossfire runs perfectly on the 91 octane that is recommended by the manufacturer so unless you're really going to compete in the car, I wouldn't waste the money.

PS: Have you had the opportunity to run at Bramshatch with the Crossfire?

 

This summer has been work work work, I had a Toyota 4x4 project (1975 FJ45) and even that has only had a handful of hours. I had checked out track day costs etc, but as I wrote in a different post a while ago I am unsure the I would run the Crossfire on a track, even if my wife was happy with the idea, which she is not. I am still thinking of getting a built up Fisher Fury to run on road and tracks perhaps even a bike engined lightweight version to keep running costs down and make maintenance easier.

Normal fuel in the UK is 95 RON, BP Ultimate is 97, Shell Optimax is said to be 98 on some sites, BP (Amoco) Ultimate in the US is 93.

 

Well my UK friend... You should run the Crossfire on a track once to appreciate it's short comings and it's advantages... I'm not familiar with the Fisher Fury... CHEERS as you say...