2024 XL (STX) 2.3L coolant intrusion

[03GeeTee]

A couple months ago I noticed my coolant was pretty much right on the low mark, if not a hair under. I topped it off to the full mark and have been monitoring it ever since and it doesn't seem to have dropped any more. I also had an oil analysis done after my last oil change and it didn't show any coolant in the oil, so I'm optimistic.

I didn't really ever check the level closely before, so I'm not sure if it was just a little under filled from the factory or what.

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[Lion77]

Mine was a tad low from the factory when I noticed it at ~8k miles. Just checked it today at 22,650 miles and it was a little bit below the minimum mark cold (about halfway between min and full when hot).

I did a lot of searching around when it was new due to a persistent burning smell, I still get that sometimes when it's run hard but could never find any leaks externally.

No signs of coolant in the oil either but forgot to do a UOA this last change. Only thing I can think of is that maybe there is a very miniscule amount of seepage through turbo housings somewhere as they are water jacket cooled, this seems to be a pretty common phenomenon with Ecoboost engines in general.

Even my 2016 Mustang GT with the 5.0L had to be topped off once in 30k miles and that was just an NA engine.