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??

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[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/

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