Catman wrote:
> SteveH wrote:
>
>> DesmaisonLCM > wrote:
>>
>>> Hi,
>>> i'm having a track day this 2nd Oct and i wonder if i could improve
>>> perfs of
>>> my Alfa 75 2.0 TS using some 'octane booster' mixed with the fuel .
>>> I have pure Methanol in my company, is it possible to put some with
>>> fuel ? how many % ?I know that i can buy a real octane booster in
>>> specialised race shop but it's very expensive .
>>> All the tricks are welcome !
>>> (The car is already equiped with OMP direct air intake)
>>
>> Just fill it with 98 RON unleaded - Optimax / Ultima or similar.
>>
>> Any more than that is overkill unless the engine has had it's timing
>> adjusted accordingly.
>>
> Plus, IIRC methanol is pretty corrosive.....

Toluene is the octane booster to use. Of course boosting octane only means
the ignition timing can be advanced. If the motor doesn't do this itself
then it's a waste of time (and money!)