PREMIUM-VS-REGULAR GAS FOR 2024 GT??

[MAT1955]

@robvas .... agreed. We tore down many engines in my youth at my grandfather's shop. You could easily see who ran their engines with longer oil change intervals and cheaper gas (valve damage) The minute you turn the key after an oil change acids, water vapors and contaminants build. use 91 octane and oil changes with a FULL synthetic and good oil filter (5K interval at absolute longest) in our Mustangs and they will thrive....or you can make guys like my grandfather rich - as he was on other peoples' cheap treatment of their equipment.

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[DarkMatterGrey]

According to ford:

1. 87 octane is fine

2. you never need to change your tranny fluid

3. don't change the oil until the car tells you too even if it's 10,000 miles

does any of this sound like a good idea?

Depends upon how long one expects to keep the car. For me none of that sounds like a good idea.

To wit:
I did manual tranny fluid at 10,000 (Motorcraft DCT), diff oil at 8,000 (Motorcraft hypoid + xl3), oil changes at 4000 and 8000 (now on Motorcraft full synth). I have 2 extra take off wheels and tires and do a six tire rotation (keeping the leftovers in my and my son’s s550 trunks as spares), run 91 top tier with 100 mix to hopefully make 93+, added a catch can more to monitor amount it catches and hopefully improve octane rating of the fuel. I drive it medium.

Thankfully I don’t have a start/stop button either (late ‘23 job 1 build).

 

[DarkMatterGrey]

@robvas .... agreed. We tore down many engines in my youth at my grandfather's shop. You could easily see who ran their engines with longer oil change intervals. The minute you turn the key after an oil change acids, water vapors and contaminants build. With a FULL synthetic and good oil filter in our Mustangs I would change at absolute max. 5K.

Here’s inside the engine of my 2008 wrangler (had to replace intake gasket) with 100k miles always on full synth changed every 6 months.

 

[Cavedog]

According to ford:

1. 87 octane is fine

2. you never need to change your tranny fluid

3. don't change the oil until the car tells you too even if it's 10,000 miles

does any of this sound like a good idea?

The engineers at Ford think so.

 

[DarkMatterGrey]

Agree on the first two (as in the opposite) but 10k mile oil changes are just fine with modern engines and oils. 20k is pushing it mind you.

Not without oil analysis. Some additives and VII’s could be worn out by then. But the amount of effort to do so for the purpose of prolonging the change isn’t worth it vs. just changing the oil.

 

[Starship Enterprise]

Regular vs premium which is better for an engine? Both use the same base with more or less octane additive. Premium gives more hp. By goosing up the hp, cylinder pressures are increased and consequently bearing, rings and every component in the drive system. You decide which is better for your car.

Octane is primarily an anti-knock rating, the secondary benefit is more hp as the timing can advance with higher octane.

Ford says do not run lower than 87 octane, so yes, 87 is the bare minimum. But guess what they also say?

Seems Ford has already decided what is better for your car…

 

[MAT1955]

@DarkMatterGrey ....perfect. My grandfather started a construction rental business after the Great Depression. Companies couldn't afford to purchase machinery but could rent it. He had everything from small engines to big earth movers. He employed 15 mechanics at one time. The reliability of his equipment spread to the point where people brought their equipment to him. Then as people started making money they wanted built engines. He added a second dyno shop and five more mechanics to build custom engines of all kinds. He was consulted when Caterpillar went through it's crisis when dealers were upping the HP and blowing the engines up before Roger Penske bought the franchises and demanded quality and standards. As a "youth" one thing became apparent to me. Quality gas/diesel, oil filters, air filters and frequent lubricant changes were the absolute key to performance, longevity and overall cost savings.

 

[Frogdog1]

^^^^^^Your last sentence pretty well sums up what I've always believed and practiced. You get what you pay for in most things in this world. There's a difference in "frugal" and "cheap".

 

[robvas]

The engineers at Ford think so.

The same engineers responsible for record amounts of recalls?

They are either fools or hampered by bean counters, the EPA, etc

Do you honestly think they decided on those thin oils (that they recently stopped recommending) on their own?

These are the same people putting rubber drive belts in things where the oil disintegrates them and you can't replace with out taking the entire engine apart. Coming up with these awful AFM/DoD designs. Plastic water pump impellers that fall apart. Fuel injectors that randomly leak.

Ford just needs the car to last through the warranty period. After that they don't care. They just want you to buy another one. They have made the modern automobile disposable (along with the clowns at GM and Dodge)

 

[Frogdog1]

^^^^^ It's called "planned obsolence" or some variant thereof. Go to a dealer after the warranty is up and bend over.

 

[Cavedog]

Gone are the days of 3000 miles, change oil and filter. Today we have better oil and filters, but best of all 10 qt. Oil capacity. 5000 to 7500 miles between changes don't sound bad. I'm thinking, keep track of the percentage of oil life and see what the mileage is like at 50 percent of life. My guess is it will be between 5000 and 7500 miles. I'll make a decision then.

 

[LouG]

According to ford:

1. 87 octane is fine

2. you never need to change your tranny fluid

3. don't change the oil until the car tells you too even if it's 10,000 miles

does any of this sound like a good idea?

Well, call me stupid, but I like the idea of my cars next owners getting a good vehicle that's been properly cared for.
Especially seeing the last two were bought by friends.
I'll pass on the Ford wisdom.

 

[AZ_Ryan]

According to ford:

1. 87 octane is fine

2. you never need to change your tranny fluid

3. don't change the oil until the car tells you too even if it's 10,000 miles

does any of this sound like a good idea?

I agree on the first two. But the computer won't let you go over 10k or 1 year on an oil change. Even if you don't drive it. If anything, I'd say the OLM probably prompts you too soon.

 

[AZ_Ryan]

For the record, most people here don't take the oil life moniter as gospel. Rather, it's just a support tool.

I DD my cars and change my oil every 5k miles. And guess what? The OLM alert almost always corresponds with my oil change. You dont need to trust it, but the bottom line is, the OLM is way more accurate than people realize.

 

[robvas]

I agree on the first two. But the computer won't let you go over 10k or 1 year on an oil change. Even if you don't drive it. If anything, I'd say the OLM probably prompts you too soon.

100% sure? It definitely does on other Ford vehicles like the F150 and Maverick/Bronco.

either way it was a more general complaint about the ridiculous things the automakers are doing these days.

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