[j-tan]

i have a 1994 mustang cobra and was woundering what number octane do i put in it. im running 91 now. i was just woundering

[First5.0]

Octane doesnt matter a whole lot. Mid grade is good if you haven't done anything to your stang. If your timing is advanced premium helps alot i run 93 with 13 degrees advanced

[2Manystangs]

Mid grade gas is a joke, either you are low or high...a Cobra should run on 93/high octane, the car will run better and you'll get better gas mileage too

[j-tan]

the car is stock

[98SVTSnake]

if the ford guide says premium or the gauges than you better put that type of fuel in. If its a cobra it will more than likely take premium fuel