Octane Boosters
Turbo Mini Forums

What do people use? Is it ok to use them on our older engines?
I was thinking of trying the Millers CVL turbo or such like for my dyno session but i am worried that whilst it adds a few octane numbers to standard fuel, it may increase combustion temps and actually do more ha than good over a long period of time.
What are peoples thoughts on them?

My understanding was they didnt mix with the fuel properly?
Not sure mate but imo E85 is the way forwad its like 110 oct can use lots of bost with out a cooler as it cools the charge and cheep

There all a con if you ask me,

Run decent fuel and get it set up properly

13.95 1/4 mile on a 2.95 fd. Carnt be that hard to beat!

I use the castrol stuff which is a lead additive and octane booster as well. The Aldon stuff is meant to be good if you dont need the lead additive

Masturbation is not a crime its a hobby

If the octane boost helps... and you run it on the dyno with and without the octane booster it should show up in the figure's right?

you can do anything if you set your mind to it...
i rather blow it up winning than keep it together losing.

finish date set for project 1... march 2018

I think it's more about detonation prevention than power increases. The only ones that make a real difference to octane are the race ones I believe.

'Where does the engine go?'

you cant put 100 octain in not change a thing and expect more power!

you make more power on high octain fuels because you build the engine for it ie more compression more ignition more boost etc

octain is the resistance to unstable ingnition ie det ping bla bla its all about runing your fuel and spark at what ever gives the best power with out killing itsself by the air/fuel mix starting to burn before its at the ignition stage of things where its ment to

I use Millers, mixed with Shell V-Power, Just for the protection against det really. but if you use it for the RR then you really need o stick with it from then on.

For a road car, it's a pain to mix it. But for competition every little helps.

Fastest 998 mini in the world? 13.05 1/4 mile 106mph

on the dyno you run it as you run it on the road, if you set it up with an octane booster, (and it works) and you end up in the arse end of nowhere filling up your going to do damage to your engine. set it up without, add it later to be safe if you must.

turbo 16v k-series 11.9@118.9 :)

Denis O'Brien.

as above, set iut up on normal boost, the extra heat on the rollers will give a safty margin on the road, then stick octane booster in if you wind the boost up.

thinners can be a good octane booster, just check its toluene/xylene.

thinners?

I think watchdog did a test on several octane boosters and found that none made any difference and some made performance worse, I know at work (refinery) we don't add anything and its down to the retailer but have to say kero works great

Done now needs redoing lol

We used to put millers cvl turbo in van when we took it to strip. More of an insurance policy I guess. Found it actually ran smoother on standard 95 fuel for some reason though.

If something is worth doing, it's worth doing half of.

Never really been one for octane boosters but most 95 ron fuel makes my car porly
shel vpower nitro makes it happy
actually so does a sprinkle of water :)
so im in the just buy good fuel club lol

edit: and dont let it sit long lol old fuel is worse than morrisons fuel

Edited by Brett on 1st Jun, 2014.

Yes i moved to the darkside

Instagram @jdm_brett

We've been filling Penny's 1.8t A4 with Tesco Momentum 99 and getting consistent 33-34mpg on runs. Tanked it from bone dry with Shell V-Power on Tuesday prior to a run an got 37.4mpg. Only thing I can put it down to is the fuel. Nothing else has been changed.

If something is worth doing, it's worth doing half of.

Yep paint thinners,

you'd need to check the materials document for each brand of cheap stuff to check it contains enough toluenor xylene, or jsut pay out and get something like this.

http://www.ebay.co.uk/itm/5-LITRES-Toluene...=item33865964d4

toluene is 114 octane, and is what they used in the 80's F1 cars to give nearly 1000hp per litre, they were running on about 70-80% Toluene, with boost pressures around 60-70 psi...

for the likes of us, dumping in 20% on a good road fuel should stave off det on the strip on a good hot day with a load of extra boost!

I seem to remember that 30% on comthing like V power will get to approx 105 octane, but the tol does slow down combustion so the more you use the more advance you need, also your stoich ratio will change, with 25% its about 14.3:1 so about 12:1 for max power, so if your a little rich anyway... no probs.

I wouldnt go much over 30% though as you may get to a point where cylinder lubrication is compromised, apparently people have mixed in caster oil oand other things to counter this, but then your degrading the octane... swings and roundabouts... yada yada yada....


Or you could just inject 50-50 water methonal mix above say 18 psi.

Clear as mud then. I will just stick to standard 95 ron fuel for the rolling road and add some boostera for track days etc as a precaution.

Looked at this a while ago, and most consisted of toulene and lard! Toulene/octane boosters are fairly evil stuff, dissolves the insides of hoses diaphragms in manual fuel pumps, rubber seals etc..