I found this recipe for octane boost on the mustang forum a while back:
"Homebrew octane boosters"
To make your own octane booster, it is easiest to make up a large batch, and then bottle it up in "dosage-size" uses.
Below is the basic formula of one of the popular octane booster products. To make eight 16 ounce bottles (128 oz = 1 gal):
100 oz of toluene for octane boost
25 oz of mineral spirits (cleaning agent)
3 oz of transmission fluid (lubricating agent)
Diesel fuel or kerosene can be substituted for mineral spirits and light turbine oil can be substituted for transmission fluid. Color can be added with petroleum dyes.
I have never tried it. I never gave it much credit and I didn't want to risk it.
'96 Jade SLE "Twilight" -- Sold :(
'01 Silver Grand Prix SE
'88 SBC Ford Mustang Convertible (work in progress)
'72 Mustang Hardtop
'06 MINI Cooper *