Octane booster.

[corrado]

Tony Devon wrote ...

I always preferred super unleaded, but one day I thought I would ask the woman that work in the petrol station just how often she sells the expensive stuff, this is a busy garage, she reckoned that in her 40 hour week she only serves 1 or 2 people with it ......... so just how long does it sit in the tanks?

I read a similar thing about a year ago so I switched to normal unleaded, so I'm wondering if normal unleaded with added octane booster is the way to go. Not sure of the cost of a bottle of octane booster but seeing as how much more expensive S/U/L is over the std stuff there can't be much difference in it.

[eden]

is £15 for 444 ml which treats 25 gallons of petrol to boost it to 100 octane.

that's enough for about 111 litres of petrol so its adds about 13 pence per litre.

[bristolmod]

so with an Octane Booster or the use of Super Unleaded, we could advance our timing points back towards the original spec??

Chris

[speedy]

Isn't one of the key ingredients in modern octane boosters Ethanol? I remember some years back having a metal can of Silkolene pro boost,octane booster, but never did use it. Think it's still in one of me sheds somewhere. Might be a collectors item now,lol.

[eden]

so with an Octane Booster or the use of Super Unleaded, we could advance our timing points back towards the original spec??

Chris

not really no, I run at 16 degrees and still use high octane.

higher octane reduces the chance of pre-ignition just because the higher octane means that the fuels flash point is at a higher temperature. This means there is less chance of the fuel igniting before the firing position (pre-ignition) when ridding hard with the engine making lots of heat, If the fuel self ignites before it should it has the same effect as running with very advanced ignition timing, the end result is more and more heat until the piston holes or the engine seizes.

It only really matters if your prone to doing hard miles at high RPM, if your pottering about then there is less to worry about as your engine is unlikely to get hot enough to cause pre-ignition.

[jason frost]

Its fine using something like this but dont set your engine up to only run with it. Set it tup o run with the crap we have then when you run out of it in the middle of no where you will still get home.