Leeh1979

I have a 1995 ford GT mustang 5.0. Pretty much a stock engine. I talk to some guy's at work and they said I can mix a little amount of 110 octane mixed with a with 91 octane. If I can use 110 octane how much should I mix with 91 octane and would it help the performance of my car at the track?

Venomantidote95

You would be wasting your time and money!

AdderMk2

You CAN use 110, but at $13 a gallon, why would you pay to make your car slower?

FWIW, you shouldnt even be using 91 octane.

Dj_Seph

Unless you advance the timing.

AdderMk2

no....

ttocs

I knew a guy that did it on his camaro. Can't remember the details but he ended up replacing that motor not long after.

uedlose

to much octane will do nothing but slow you down, unless your engine needs it

nitrous_bob

how much slower do you want the car to be ??

you realize that octane REDUCES the combustability of gasoline right ? it is a deterrant for detonation

you HAVE to add timing to increase for the power loss of more octane.

FYI, turbo blue at my local station is only $8.99 i think (104 ????)

anyways compared to current gas prices.....it doesnt make sense cuz when gas was .89 a gallon....turbo blue was $3.99 so it only doubled when regular quadrupled

if your at 14* or less timing.....87 is fine unless it's about 110* out or crazy humidity. i spray on 12* if it's cool and 87 octane. otherwise i either drop to 10* OR use 89....but never both

Vader GT

agreed, don't do it! You would also foul the S%&t out of your plugs....

TrimDrip

I was having problems with detonation with a supercharged car and stuck in some race gas to see if it would help. A week later my wideband 02 sensor is f'd. Could have been fluke. I took it to the tuner and it was reading fine. Took it back a week later and it was 2 points off his.