[eod4paws]

Ok all Greetings from colorado and I have a "Dumb" question.

Can I use/run octane gas that is higher than 97 octane in my "Stock"GT ? I have found a place where I can get 111 octane (Race fuel) and want to see if I can use it ?

Found itfor $6.76 a gal.

Can I mix it 50/50 with 85 - 91 octane from the pump?

91+111=212 /2 = 106 oct.
85+111=196 /2 = 98 oct.

Please weigh in and advise, Thanks in advance, Fred

[madmaxx69]

No please do not, the engine is set to run on min octane, unless you want to get a flash turner from SCT, you will damage the EGO sensors and the car will run like crap, If I was you get a tuner from SCT to run E85 its 110 to 115 octane. Other wise stay with 87 to 93 octane,

[fasfzr1]

I have run nothing but sunoco 110 octane in my all but stock 1989 5.0 for 3 years but that's because i take it out of the drums for my race car! DO NOT TRY IT IN A 05 or newer stang or any for that matter unless you can afford the results.

[RLG34750]

i have to agree with alll the other response

there is no need to run race fuel in your car it will do more damage than good......

[TravisCadello]

do more damage then good. and will probably not even burn the fuel right and mess up alot of stuff. stick with 89 or 93 max.

[MustangMoto]

Is the fuel leaded or unleaded?? If the fuel is leaded it will screw your cats and o2 sensors up eventually. I had similar questions about race fuel in a stock GT Anyway I found an unleaded 100 octane street fuel, called StreetBlaze 100. I have more throttle response, torque, and power.

[Crazystang89]

As long as it's not leaded it won't hurt anything. And unless you're tuned for it, it won't help either.