GT Fuel

[engine12]

The Manual does not state a requirement for premium fuel in the GT, what is everyone running in their GT ? Always thought that the GT required premium fuel... thanks !

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[svt93style]

The Manual does not state a requirement for premium fuel in the GT, what is everyone running in their GT ? Always thought that the GT required premium fuel... thanks !

Im sure you "can" run 87 and the computer will adjust - tune down.
I wouldn't run anything but 93 personally.
Is it not inside the fuel door?

 

[derieuz]

87-93, 93 recommended.

I run 93

 

[wilkinda65]

All of my Mustangs have only seen 92-93 octane. This trend will continue to the LE when she arrives

 

[Barrel]

The manual does state that the minimum fuel requirement is 87 octane. The recommended fuel for best performance is 93 octane. Basically the computer will adjust timing based on the octane of the fuel you input. You won't hurt the motor running 87. The 435hp rating is with 93.

 

[JimmyTwoTimes]

It's 435 hp with 93; 430 hp with 87, according to Car and Driver. Mileage is going to be crappy enough as it is and I ain't drag racing; I'm using 87.

 

[Macfarland]

I Cali we only have up to 91 oct. Anyone knows whats the HP with that octane number?

 

[Barrel]

I Cali we only have up to 91 oct. Anyone knows whats the HP with that octane number?

You're not going to see a difference between 91 and 93 on the stock tune.

 

[USPSALIMITED]

It's 435 hp with 93; 430 hp with 87, according to Car and Driver. Mileage is going to be crappy enough as it is and I ain't drag racing; I'm using 87.

99.9738% of drivers will not be able to tell if they are running 87 or 93, and those few that can will only be able to notice it when they are really wringing its neck.

If you modify the car things may change though.

 

[S550guy]

I Cali we only have up to 91 oct. Anyone knows whats the HP with that octane number?

430-435. Interpolating, we get 433.33

433.33 HP on 91 octane

(yes, I'm bored)

 

[USPSALIMITED]

430-435. Interpolating, we get 433.33

433.33 HP on 91 octane

(yes, I'm bored)

Jimmy rounded. Ford said 435 at high octane & minus 1% at 87.

 

[fionic]

93. Why anyone would use anything under that is beyond me.

 

[USPSALIMITED]

93. Why anyone would use anything under that is beyond me.

Honestly, because I can't tell the difference, except in my wallet.

 

[SeventhWard]

93. Why anyone would use anything under that is beyond me.

How about "because they don't sell it in my state"? Come back from beyond - we California dudes are limited to 91 Octane and haven't a realistic choice.

-SeventhWard

 

[DivineStrike]

I will use both. Will probably use 93 on occasion, especially when I want to do some spirited driving. But for road trips and such I'll use 87.

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