PREMIUM-VS-REGULAR GAS FOR 2024 GT??

[robvas]

If you don't have the octane requirement in your place of residence then octane boost additives are always a better alternative approach....

Those will turn your plugs, O2's and cats all orange with deposits

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[GregB-Dark-Horse]

Those will turn your plugs, O2's and cats all orange with deposits

Well since I don't need this then using pump gas at 93 octane or better is my preferred option.
I also have unleaded race gas available in my area.... if that was really a route I wanted to go with.

Regardless if you are going to spend big money on a new muscle car with a high compression engine then don't cheap out on the fuel requirements, IMHO.

 

[Cipis]

If some of you guys use 87 in your car, than RON95 which is equivalent to your 91 is totally safe.

The only reason why I use RON98 instead of 95 is because it has 5% less ethanol.

We have actually national gas station company called EuroOil, which provides on some station 98 premium plus with only 0.2% Ethanol. There are apps for many petrol stations where nowadays you can check parameters of the fuel online.

 

[4ksk416]

Sold my beater/stock 2006 4 cylinder Honda Civic for my PP 25 GT. Always put top tier 91 in both as that is the best gas I can get in CA. Personal preference.

 

[Abilor]

Yes the 5.0 has high compression, but it is cylinder pressure and hot spots in the combustion chamber that cause "pinging" or pre-detonation of the fuel that can cause bad things such as bent rods and hammered bearings.

The car has microphones in the block, more commonly known as knock sensors that when a "ping" is detected because of low octane gas ( octane is not a measurement of power, it is a measurement of resistance to pre-detonation/pinging) will retard the timing so that there is no pinging, but when you retard timing you take power out of the engine ( Engine Masters on MT has a great episode about timing and power)

Some people say to add a couple of gallons of E85, I am not a fan of that as the car does not have a sensor that changes the tune to compensate for E85 having less BTU's per gallon than gasoline, but hey it's your car go for it.

Some people just suck it up and pay for the higher octane so the car will tune itself for maximum power.

Some people will mix the gas at the pump, putting in 5 gallons or 87 octane to every 5 gallons of 93 giving them an in between octane rating that will keep the knock sensors happy.

But if you are not mashing the gas and driving somewhat normally you probably won't even notice the reduction in HP but you will save yourself 15 bucks every time you fuel up.

Where my car does not get a lot of use, I am using ethanol free 93 octane gas in it, which costs about the same as premium fuel, so I feel your pain as far as burning $5 dollar bills when I fill it up.

This guy knows what he's talking about ^^^

 

[AZ_Ryan]

Our tiers are 87, 91, 93. Some specialty stations have higher race gas ratings but obviously it's the same as European fuels just calculated differently. I'd imagine some sort of metric vs imperial calculation.

Almost all our fuel is 10% corn juice.

89 "mid-grade" is also very common in the western US.

 

[Kevi]

Right off the Ford website... https://www.ford.ca/cars/mustang/models/dark-horse/
I think you all need to rethink your strategy around using bad gas for a high compression engine...

If you don't have the octane requirement in your place of residence then octane boost additives are always a better alternative approach....

That's just listing the Horsepower rating with 93 octane. Sure you may lose 10hp with 87 but for regular driving who cares?

 

[GrabThatBlue]

Right off the Ford website... https://www.ford.ca/cars/mustang/models/dark-horse/
I think you all need to rethink your strategy around using bad gas for a high compression engine...

If you don't have the octane requirement in your place of residence then octane boost additives are always a better alternative approach....

Can you please show me what I missed on this picture?
What do you want to say with this?

 

[Bear376]

The standard for most stations in the States are 87/89/91-E10. Most stations will also offer E0, usually in 87 octane or 91 octane. In different parts of the country there is various optional fuels. 85 octane in the mountains, 93 octane in some areas, and E15/30/85 at some stations. Most stations offer E0 gasoline because it is poor practice to use ethanol in boats, generators and garden motors.

In my opinion, ethanol should not be required in fuels. It would not be cost effective without government subsidies, and does decreases fuel efficiency slightly. The whole premise for using ethanol was that politicians believed that it could be produced cheaply from waste organic material instead of corn. That fable was like most of the scams that politicians fall for and foist onto the public. Corn requires lots of fertilizer to grow, and most of that is produced using fossil fuels. Not to mention the nitrogen contamination of the water table from fertilizer use.

 

[GregB-Dark-Horse]

Can you please show me what I missed on this picture?
What do you want to say with this?

LOL, really? It's pretty self explanatory... And my statement still stands... why buy a muscle car with 12-1 compression and cheap out on the gas? If you can't afford the correct gas then IMHO there's a problem which is what the OP was posting about at the beginning of this thread.

 

[GregB-Dark-Horse]

That's just listing the Horsepower rating with 93 octane. Sure you may lose 10hp with 87 but for regular driving who cares?

Ok up to you...

 

[GrabThatBlue]

LOL, really? It's pretty self explanatory... And my statement still stands... why buy a muscle car with 12-1 compression and cheap out on the gas? If you can't afford the correct gas then IMHO there's a problem which is what the OP was posting about at the beginning of this thread.

The picture just shows how much power every trim makes. Nothing about fuel.

 

[AZ_Ryan]

That's just listing the Horsepower rating with 93 octane. Sure you may lose 10hp with 87 but for regular driving who cares?

I'd venture it's a lot more than 10HP. A previous poster speculated it could be as much as 40HP. We'll never know without some dyno numbers. But for the extra $15 bucks a tank, I'll take the power increase every time.

 

[Mustang8]

I run 93 in my 2024 but with my 2015 GT I only ran 87 and for the 9 years I've had it never once had an engine issue at all.

 

[Kitulu]

I run 93 in my 2024 but with my 2015 GT I only ran 87 and for the 9 years I've had it never once had an engine issue at all.

Almost like it was designed to run on 87... imagine that!

My take on it is that, while you need 91 or higher to realize the full potential of the engine, running it on 87 does not harm the engine as long as you aren't hearing any knocking.

My GT is my DD when I'm not on the bike. Roughly 60 miles round-trip to and from work. I fill up with 87, and have had zero issues in the last year and 11,000 miles.

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