2018 gas??

hmdballa219 · Jun 21, 2018

Hey guys what octane is everyone running in there 2018 GTs? I have still been running 87 regular octane. I know in my ecoboost, they recommend 93 octane for a 15% power increase, from ford, and u could feel the difference. I don't see anything about these GTs though? Worth going to 93 octane? Or no difference,

Thanks guys.

bootlegger · Jun 21, 2018

hmdballa219 said:
Hey guys what octane is everyone running in there 2018 GTs? I have still been running 87 regular octane. I know in my ecoboost, they recommend 93 octane for a 15% power increase, from ford, and u could feel the difference. I don't see anything about these GTs though? Worth going to 93 octane? Or no difference,

Thanks guys.

Ford recommends 91+ for optimal performance, but it is perfectly safe to use 87. No one has done a back to back dyno test on the new engine to check how much power difference you get with different octane levels.

hmdballa219 · Jun 21, 2018

bootlegger said:
Ford recommends 91+ for optimal performance, but it is perfectly safe to use 87. No one has done a back to back dyno test on the new engine to check how much power difference you get with different octane levels.

Ok great, that was the perfect answer I was looking for, looking on more of the performance aspect, so I'll go with 91 then. Appreciate it!

Lonmon · Jun 21, 2018

I have been running mine on e85 for about 6k miles now. Of course this is with a proper tune for it. I would run 93 or best premium available otherwise for maximum performance on a stock tune. (Or if e85 is not available)

hmdballa219 · Jun 21, 2018

Lonmon said:
I have been running mine on e85 for about 6k miles now. Of course this is with a proper tune for it. I would run 93 or best premium available otherwise for maximum performance on a stock tune. (Or if e85 is not available)

I haven't broke 1000 miles yet on the car lol. But I would be interested in e 85 when I 1. Find closer gas stations with it, and 2. I'm not tuned for e 85 so when I decide to tune I would like to go that route, so far now I'll just go with the easiest, 91 or even 93.

Ebm · Jun 21, 2018

I floor it with 87 octane. Hasn't broke yet. I think we are good.

codesx100 · Jun 21, 2018

I've used both 87 and 93 on the 2018, i would recommend staying with the 93, the throttle response is better and getting the full 460HP or 420 to the wheels is nice. 87 made the car feel sluggish and jerk from time to time when trying to hit it. This is also with running the car in Sport+ and exhaust fully open with Track mode. Besides its only an extra few dollars when filling up.

Zinc03svt · Jun 21, 2018

Mine is going to get 93 plus 5 gallons E. ;).

jasonstang · Jun 21, 2018

Run whatever you want. WDGAF.

4 ROUSH · Jun 21, 2018

codesx100 said:
I've used both 87 and 93 on the 2018, i would recommend staying with the 93, the throttle response is better and getting the full 460HP or 420 to the wheels is nice. 87 made the car feel sluggish and jerk from time to time when trying to hit it. This is also with running the car in Sport+ and exhaust fully open with Track mode. Besides its only an extra few dollars when filling up.

^Plus1........ :headbang:

hmdballa219 · Jun 21, 2018

Ok I'll be using the 93 then, not really worried about the price of it as I don't put many miles on the car yet, I just want the best gas for performance wise. So 93 it is!

michail71 · Jun 21, 2018

I've run both. My past few fillups have been with 93 but I can't tell the difference. The first full throttle pull I did in this car on 87 startled me and I've never heard any pings.

The stations here don't have 91 so I may get a tune to take full advantage of 93. But the 2018's don't gain too much power with a basic setup but I think the tuners are still tinkering with this engine. It seems the ones that have made some bigger power jumps have been going catless and I definitely don't want to do that.

Just stick to a Top Tier fuel. That is what is most important.

bootlegger · Jun 21, 2018

michail71 said:
I've run both. My past few fillups have been with 93 but I can't tell the difference. The first full throttle pull I did in this car on 87 startled me and I've never heard any pings.

The stations here don't have 91 so I may get a tune to take full advantage of 93. But the 2018's don't gain too much power with a basic setup but I think the tuners are still tinkering with this engine. It seems the ones that have made some bigger power jumps have been going catless and I definitely don't want to do that.

Just stick to a Top Tier fuel. That is what is most important.

There is just as much of a gain to be made with the 2018 as there was with the 2015-2017. Even more with E85.

ivantwilliams · Jun 21, 2018

Still sort of new to Mustangs. But, I use 93...

TnWHTMARE · Jun 22, 2018

I could be wrong here but I believe we (18&up) are a bit more vulnerable to lower octane fuel than the previous gen, if only by virtue of our higher compression. I clearly do not have very good gas around here because I never see more than 22 degrees of advance under throttle. Knock sensor is active. :( Quality E85 seems like a much more consistent option, though not always convenient.

2018 gas??

hmdballa219

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bootlegger

Enginerd

hmdballa219

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Lonmon

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hmdballa219

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Ebm

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codesx100

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Zinc03svt

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jasonstang

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4 ROUSH

NONE

hmdballa219

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michail71

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bootlegger

Enginerd

ivantwilliams

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TnWHTMARE

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