87 or 91 octane for the GT?
#1
87 or 91 octane for the GT?
I used to have a ricer and all i put in the car was 91 high performance, but that's because it was turbo. now with the GT i don't know what to do, i hear a lot of people say stick with 87 on the GT. Can i get more input please?
#2
RE: 87 or 91 octane for the GT?
ive always put high octane in my 96 cobra...im pretty sure its a must in all modular 4.6s..ive also hear from many of mustang owners that if you run low octane..you have a chance of hurting your motor..so i would have to say..stick with the higher octane
#5
RE: 87 or 91 octane for the GT?
to be honest with ya..ive always thought that the knocking from a high performance motor comes from lack of octain..so if you hear any kind of knocking at all...run your car almost out of gas(not all the way because you dont wana suck up any junk from the bottom of your gas tank)and fill that bad boy up with some not so cheap gas..i know its expensive but hey..sports cars arnt cheap..and yeah ive always put 91 or better in my cobra
#6
RE: 87 or 91 octane for the GT?
I used to run the lower octane and it never cuased any problems but I've been running the "good ****" for a long time now. I just suck it up and get it, better off in the long run.
#8
RE: 87 or 91 octane for the GT?
back in like 2000 i read in car and driver(one of those mags) that a gt actually got more hp from higher octane.......dont rember the exact numbers but im sure it was anything immpersive.