Tesco 99 RON fuel.

Apologising to you would be like apologising to dog s*it you just just stepped in on the pavement..............

Any engine which suffers from serious detonation, is not likely to last very long. I would have it looked at before you have problems.

Apology accepted.

He is actually right about toluene as an octane booster, or constituent of it Steve.

Tesco local express with Petrol still sells 97, tesco Extra with petrol=20 Express sells 99. the Local express used to be a BP/Safeway store. the=20 other local Tesco Express was an Esso and still sells Esso petrol, so i=20 reckon the ex BP one is still doing BP fuels too. Three tesco petrol=20 stations, three sets of prices, three petrol suppliers, and three=20 varieties of SUL.

--=20 Carl Robson Audio stream:

Toluene yes, but WTF is "toulene"? Remember this is the same tosser that was priding himself on his "grammer".

Aw look, "ken" is upset. Bless.

Are you really as dim as you seem? Oh, hang on that's a rhetorical question.

Toluene is an octane booster, it has more energy per unit volume than petrol, and the big advantage for mixed road/track use is that it's lead free so it won't screw the catalyst. It works because it has a higher flash point than the lighter fractions in petrol hence it retards the flame front leading to a smoother burn and avoids detonation even at high compression ratios. If you boost the octane rating of the fuel using toluene the ignition can be advanced leading to better power output and better throttle response. It's not all good news though because as an octane booster toluene makes it more difficult to ignite the fuel, so amateurs who use too much toluene, fail to lean off the mix and fail to advance the ignition find that all they've done is make their engine hard to start, less powerful and screwed the throttle response.

Another advantage of toluene is that it's cheap and readily available, and compared to other octane boosters it's relatively safe.

It's not some magic solution to all problems and if you do tune your engine for 15% toluene you're going to have to restrict yourself to short trips or carry a lot of flammable material in the boot at all times.

BTW "ken" try asking the question to someone who hasn't got a chemistry degree next time.

Not upset at all...........and unlike yourself post on here having contact details that are easily availble!

Chemisty degree...............is there anything that "Steve Firth" isnt good at?................Telling the truth perhaps?...............lol

Class.

As does using exclamation marks...

Don't you know how to use Google? Or a spell checker?

Which "cut and paste" was that Chris?

I used to do contract work for a company that ran engines at up to 5 bar compression, they needed to run on 85% toluene to avoid detonation. However they did manage to achieve over 1000bhp/litre. And no, that's not an extra zero on the end.

I'll have a 300cc one for my golf.

Only last you one race, then there's a big bill for fettling it for the next one.

The one about toluene......................its almost word for word cut and paste job!

Lol...............you really do think anyone is going to believe that after reading all of the piffle you post?

And no doubt you would be able to assist with the fettling work?...................Get real you are a clueless arsewipe!