Fuel for 2024 Mustang GT - premium or regular or mid grade fuel?

[BrianJ77]

Always Shell. Always Premium, which in my area is 91. If they offered 93 or higher, I'd take it.

While the minimum is 87, the V8 is an engine running at a 12:1 compression ratio. Higher than minimum is welcome, for maximum power and pre-ignition prevention.

Along with highest octane, select a Top Tier brand fuel, to help ensure the engine is getting a good dose of detergents. https://www.toptiergas.com/gasoline-brands/

This! Was listening to a podcast a few weeks ago and the engine tuner recommended Shell or BP fuels over all others. Said their additive packs are superior. Only Shell V-power for my pony, too!

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[robvas]

I remember as a teenager I would borrow my dads car, it had a 350 from a 1978 Corvette, he always told me to put premium in it...

180hp, 8.5:1 compression, what a waste of $ that was! Should have just put 87 in it. Oh well, it was barely $12 to fill it up back then anyway.

 

[Radiant]

it’s a 12:1 engine… 93 is barely adequate

True, it has to pull timing to run on 87. Modern Mustangs, whether Ecoboost or Dark Horse, prefer premium fuel for peak power.

 

[Upacurb]

True, it has to pull timing to run on 87. Modern Mustangs, whether Ecoboost or Dark Horse, prefer premium fuel for peak power.

Yes agree. Leave the 87 for the Camrys and Accords

 

[roadpilot]

This! Was listening to a podcast a few weeks ago and the engine tuner recommended Shell or BP fuels over all others. Said their additive packs are superior. Only Shell V-power for my pony, too!

Top Tier is Top Tier. I used to work for a downstream petroleum distributor.

 

[BrianJ77]

Top Tier is Top Tier. I used to work for a downstream petroleum distributor.

True. I was just quoting what he said in the podcast. Agree that any top tier should be fine, although I did hear that Marathon gas leaves something to be desired as does Sunoco...both rated top tier. As you worked in the industry would love your insight if you have more information to offer about the different brands, etc.

 

[Interstellar]

Time to rustle some jimmies here.
The manual says use 87, although it will have an effect on performance. It also says to use premium fuel when temperatures are high.
I used 87 almost exclusively the first 9k miles on my S650. Summer temps are here in Texas so recently made the switch to 93.

Switching to 93 I honestly feel no difference, filling up is more expensive, and I get worse gas mileage. I do understand it is definitely making more power though (just not noticeable).

I’ve said multiple times when this gets brought up, but “if you can afford the car you can afford the gas” is such a terrible argument. If I’m cruising on a 10 hour road trip, there’s absolutely no need to put in 93. You’re still faster than every other car on the road. Also, people saying they only use Shell really don’t know how downstream petroleum works. Paying $1 a gallon more for Shell marketing-power-ultra-plus is not going to have any effect compared to buying any other Fortune 500 company gas.

I will say I wouldn’t switch from 93 to 87 and immediately mash the throttle. Give the ECU time to figure things out.
And before anyone wants to make a counter argument, I’m pretty sure Ford engineers know more about the 4th gen coyote than you do. Also does the 5.0 F150 require 93?

 

[robvas]

F150 isn't the same engine or programming....

 

[Skye]

I feel that, received HP and performance could be half of the discussion, pre-ignition and ping prevention being the other.

An engine using a fuel with a lower octane level will be more susceptible to pinging, boosted (Turbo and SC) engines especially, than one using a higher octane. Its my understanding the ECU/PCM will sense pre-ignition is occurring and adjust timing accordingly.

Given the service life of any engine, I'd like to prevent any pings (perceptible to the Driver or not) from occurring as much as possible. It's a step towards goodness.

Scene opens...

While the patient is lying on the operating table, the surgeon enters the OR. "You'll like this new hip. It meets the minimum test requirements. It's good enough."

YMMV.

 

[Radiant]

Its my understanding the ECU/PCM will sense pre-ignition is occurring and adjust timing accordingly.

Yes, the knock sensor allows the ECU to pull timing to run on 87 octane. Once you return to premium fuel, it'll advance the timing back to full power as you're driving.

 

[Zig]

I feel that, received HP and performance could be half of the discussion Directly-related to that, pre-ignition and ping prevention being the other.

An engine using a fuel with a lower octane level will be more susceptible to pinging, boosted (Turbo and SC) engines especially. Its my understanding the ECU/PCM will sense pre-ignition is occurring and adjust timing accordingly.

Given the service life of any engine, I'd like to prevent pre-ignition from occurring as much as possible. It's a step towards goodness.

Scene opens...

Lying on the operating table, the surgeon enters. "You'll like this new hip. It meets the minimum test requirements. It's good enough."

YMMV.

Examples from the wayback machine: water hose, water fountain, bottled water.

 

[IFFV68]

In a 2024 mustang GT do most people use premium or regular or mid grade fuel?

I only use 91.
I would use 93 but it’s not available in Colorado because of the altitude which doesn’t make any sense to me..
My vehicles run the same at 14,000 feet or 5000 feet. Can’t notice any difference.
Mt. Evans & PikesPeak Road are all over 14,000 feet.
I’ve used premium fuel in all of my vehicles, even my lawnmower.
Back in the day when I had my 67 Fairland GTA.
I use 98 premium. It was $.32 a gallon…
I could fill my car up for about five bucks.
Since the compression ratio is over 12, you’re not only only cheating yourself, but you’re cheating the engine out of performance.
You can pay now or pay later.
You will pay either way!

 

[IFFV68]

Time to rustle some jimmies here.
The manual says use 87, although it will have an effect on performance. It also says to use premium fuel when temperatures are high.
I used 87 almost exclusively the first 9k miles on my S650. Summer temps are here in Texas so recently made the switch to 93.

Switching to 93 I honestly feel no difference, filling up is more expensive, and I get worse gas mileage. I do understand it is definitely making more power though (just not noticeable).

I’ve said multiple times when this gets brought up, but “if you can afford the car you can afford the gas” is such a terrible argument. If I’m cruising on a 10 hour road trip, there’s absolutely no need to put in 93. You’re still faster than every other car on the road. Also, people saying they only use Shell really don’t know how downstream petroleum works. Paying $1 a gallon more for Shell marketing-power-ultra-plus is not going to have any effect compared to buying any other Fortune 500 company gas.

I will say I wouldn’t switch from 93 to 87 and immediately mash the throttle. Give the ECU time to figure things out.
And before anyone wants to make a counter argument, I’m pretty sure Ford engineers know more about the 4th gen coyote than you do. Also does the 5.0 F150 require 93?

I have to somewhat disagree with your Octane analysis..
Here in Colorado we have different Gasoline additive’s that make a huge difference.
As an example, I have a 2020 4x4 F-150 Rapid Red Limited, 3.5 HO, 450 horses, 510 lbs. torque. The 2019 & 2020 F-150 Limited’s have the same 3.5 H.O. as the RAPTOR.
The Owners manual says use PREMIUM Gasoline.
In the Denver area, Littleton, I’m getting around 14-15 M.P.G.
When I fill up in BAILEY Co. on top of Crow Hill & get down to Littleton I’m getting around 32 M.P.G.
After driving around town it quickly drops to about 17-18 M.P.G. & stays there.
Now I’m not going to lie. It’s down hill most of the way except for two very steep hills.
I do not baby my Truck. I get my foot in it going up those hills. I like to Race those over rated HEMI’s. Trucks.
The Gasoline in the Mountain's are a better blend than the Crap we get down here.
Yes gas is more expensive in the Mountains.
Is PremiumI 93-91 Octane any better than 87?
It’s your MUSTANG. Not mine.
Good Luck..
The GT Gas filler cap says 87 with a Plus +.
He said it definitely makes more power but not noticeable.
If it’s not noticeable how do you know it makes extra power?
Sin Loy = Sorry.

 

[Wiley Marmot]

93 O nly!

 

[Tyler Durden]

Time to rustle some jimmies here.
The manual says use 87, although it will have an effect on performance. It also says to use premium fuel when temperatures are high.
I used 87 almost exclusively the first 9k miles on my S650. Summer temps are here in Texas so recently made the switch to 93.

Switching to 93 I honestly feel no difference, filling up is more expensive, and I get worse gas mileage. I do understand it is definitely making more power though (just not noticeable).

I’ve said multiple times when this gets brought up, but “if you can afford the car you can afford the gas” is such a terrible argument. If I’m cruising on a 10 hour road trip, there’s absolutely no need to put in 93. You’re still faster than every other car on the road. Also, people saying they only use Shell really don’t know how downstream petroleum works. Paying $1 a gallon more for Shell marketing-power-ultra-plus is not going to have any effect compared to buying any other Fortune 500 company gas.

I will say I wouldn’t switch from 93 to 87 and immediately mash the throttle. Give the ECU time to figure things out.
And before anyone wants to make a counter argument, I’m pretty sure Ford engineers know more about the 4th gen coyote than you do. Also does the 5.0 F150 require 93?

That is the thing. You've put 9k miles on 87 with no issues.

Genuine question, why would the Ford engineers put 87+ on the gas cap and say that you can put 87 octane on the owners manual, if putting 87 is bad for the car?

People on this thread and other threads online scare you into putting premium and I just don't understand why. If 87 was actually bad for the car, why would Ford put it on the gas cap and put it on the owners manual that it can take 87?

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