what oil does the factory put in the 2024 mustang gt

[DARK HP]

I've seen people say full synthetic or synthetic blend, anyone know??

Sponsored

 

[cosmo73]

Good question. I truthfully have no idea but would assume it is a blend to keep cost down.

 

[Skye]

Ford will use the most cost-effective means to meet the specification.

It's difficult to see the Mustang getting any better than a blend. Further, the default selection when getting a dealer oil change is blend.

Most owners are not as attentive with break-in as we are; a blend will assist with that. Many of us suspect the factory fill also contains additives, like XL-17, but I have no data to support the idea.

Edit,

These are the API specifications supporting WSS-M2C961-A1 (from the 2024 Owners Manual). While these standards list the tests and requirements, they do not specify the type of oil (dino, blend, synth) to be used, only its properties.

https://www.api.org/-/media/files/c...publications/17thed1509addendum7rev021218.pdf

https://www.api.org/products-and-se...categories-and-classifications/oil-categories

I wouldn't overthink it. Use Motorcraft blend, 5W-30. If you want to go over and above that by using a full synthetic, that's fine.

- Follow the maintenance schedule
- Use quality parts that meet or exceed the specification
- Document all activities

I later did some research, seeing what types of oil, brands of oil, supported Ford's specifications. From the three major labels I reviewed, the only types of oils that were listed as meeting the WSS-M2C961-A1 spec were blends or synthetics. I couldn't find a dino label meeting the Ford requirement.

 

[P2]

From page 371 in the owners manual...

 

[DarkMatterGrey]

Ford will use the most cost-effective means to meet the specification.

It's difficult to see the Mustang getting any better than a blend. Further, the default selection when getting a dealer oil change is blend.

Most owners are not as attentive with break-in as we are; a blend will assist with that. Many of us suspect the factory fill also contains additives, like XL-17, but I have no data to support the idea.

Edit,

These are the API specifications supporting WSS-M2C961-A1 (from the 2024 Owners Manual). While these standards list the tests and requirements, they do not specify the type of oil (dino, blend, synth) to be used, only its properties.

https://www.api.org/-/media/files/c...publications/17thed1509addendum7rev021218.pdf

https://www.api.org/products-and-se...categories-and-classifications/oil-categories

I wouldn't overthink it. Use Motorcraft blend, 5W-30. If you want to go over and above that by using a full synthetic, that's fine.

- Follow the maintenance schedule
- Use quality parts that meet or exceed the specification
- Document all activities

I later did some research, seeing what types of oil, brands of oil, supported Ford's specifications. From the three major labels I reviewed, the only types of oils that were listed as meeting the WSS-M2C961-A1 spec were blends or synthetics. I couldn't find a dino label meeting the Ford requirement.

I'm in the category of over thinking it

It is the same spec for Ecoboost, which is more prone to LSPI (low speed pre-ignition) because it is both GDI and Turbocharged.

https://www.enginelabs.com/engine-t...specific-oil-could-save-your-ecoboost-engine/

That spec is formulated to reduce that condition, which among other things is reduced calcium (detergent additive). I don't know how much the Coyote is prone to LSPI vs. the Ecoboost, but either way I will not vary from this spec. Ford oil bottles specifically call this out.

One of the most interesting things about LSPI is ZDDP (Zinc and Phosphorous), which is a great anti-wear additive, helps to reduce that condition, but are bad for cats (catalytic converter, not felines). So in recent years, that has been reduced. So if you're not running cats (racing/track car?), maybe that's a good reason to vary from the spec.

https://www.lubesngreases.com/magazine/24_5/quenching-lspi-in-modern-engines/

There are a lot of technical articles about calcium and LSPI:

https://dsportmag.com/the-tech/education/lspi-low-speed-pre-ignition/

https://www.sae.org/publications/technical-papers/content/2020-01-1424/

https://www.lubesngreases.com/magazine/24_5/quenching-lspi-in-modern-engines/

 

[Frogdog1]

My 2025 Mustang GT just came in with Ford's synthetic blend in it according to my dealer. I will leave it in for a thousand miles and go one more oil change (the dealer uses blend) with Ford's blend to ensure break in which implies microscopic wear as the rings and bore seat with one another among all the other parts.

After the first oil change, I will put Pennzoil full synthetic in it. Both Mobil 1 and Pennzoil meet ISAC GF-6 specs. The best brand of synthetic is that which is clean and changed often. I don't over-think this. Pennzoil has been good for me and the company I own and it's vehicles for years.

 

[Aggie1999]

From page 371 in the owners manual...

There are 371 pages in the Owners Manual? Maybe one day I'll open that file.

 

[Starship Enterprise]

I looked this thread up because I was curious what OEM fill was in case I had to add before first oil change.

I always thought that full synthetic isn’t used in many cases for break-in, because it doesn’t allow the necessary wear on a microscopic level that break-in needs.

Turns out that is a myth and supposedly many cars come with synth from the factory???

 

[robvas]

I looked this thread up because I was curious what OEM fill was in case I had to add before first oil change.

I always thought that full synthetic isn’t used in many cases for break-in, because it doesn’t allow the necessary wear on a microscopic level that break-in needs.

Turns out that is a myth and supposedly many cars come with synth from the factory.

What engine builder would suggest you use synthetic on a new engine?

it's not that it won't break in, it just what's the best way to do it?

they also don't tell you to change the oil until the OLM goes off in a year or whenever.

New also cars don't bed the brake pads in like they tell you to when you buy a set of aftermarket pads/rotors.

 

[Starship Enterprise]

I don’t know. Like I said, I always thought synthetic oil was not recommended for break-in. I tried to find actual examples of which car manufacturer puts synthetic in at the factory. I couldn’t find an example. So if there is, it would take too long to find out.

These “expert” websites are a dime a dozen and most are probably AI created. It’s really hard to wade through all the BS the internet provides. I guess either it’s true but not able to be easily verified, or I got suckered into a BS Google answer.

 

[robvas]

A lot of cars come with Mobil 1 synth

corvette and Porsche immediately come to mind but these days there are probably a ton more

 

[LouG]

Break in is a very different thing now compared to "back in the day".
Lower ring tension, much more precise machining, better metallurgy and oil quality all reduce the long drawn out break ins we used to do. Not to mention fuel and ignition mapping engine designers would have killed for 50 years ago.
I've done break ins by the book for all my new cars and bikes, with full synth oil changes at 1500 - 2000kms and never had any issues with smoking, oil use, strange engine noises, etc.

Sponsored