what kind of fuel you use?

i was using unleaded the 83 octane and my friends started saying i need to put 93 in there. but it says don't use higher octane in the user manual. So guys what do you put in your Mustang. i got a 2006 Mustang GT

use what the manual says, unless you have a 93 octane tune

ive always been skeptical about this as well, should i jus use the 87 octane then?

I don't even think anyone sells 83 octane? Anyways, use what the manual calls for unless you have changed the timing/tune, or have some pretty heavy mods.

I use 87.

There is absolutely no point in using anything over 87 octane unless your car is tuned to take advantage of the extra octane or if you increase the timing...

I use nothing but shell 93 in my car...

enough said, ill jus start using 87 then.

where do you find 83? the lowest they have around me is 87. the pumps in the chicagoland are all 87, 89, and 93. and there are a few gas stations that sell race gas too.

93 chevron with techron. The only fuel that goes in my cars.

I believe the 83 was a typo guys
I only use 93 but my cars are tuned for it out of the factory

+1
Same with Texaco with techron, I seem to make the most power out of it. my car HATES BP.

in order
Chevron/Texaco
Shell Vpower
Exxon/Mobil
I don't even want to put BP on here

Shell 92. I needs it.

91 is the highest you can buy here, thats what i use and am tuned for

If the car doesn't have a tune than it's pointless and you're wasting your money by using anything other than 87 octane. The only reason why you should ever use a higher octane is if you can audibly hear knocking. If you're going to get a tune, than spend the money on 93 octane. When tuned for 93 octane will provide more power and even better gas mileage.

Custom tuned for 93 Chevron

I forgot, I use BP.

I use 93 octane on an 87 race tune because I had some pinging issues with 93 octane tunes so I'm playing it safe now.

I use only 91 w/ babamchips race tune...Damn california and there NO 93 or higher rules ! BASTARDS !!!