Mechanic used different oil weight in my '22 2.5 GT-Line. Should I have him change it out or is it ok?

[Thomby]

1qt extra. Pretty sure the mechanic used v6 oil change specs

Really doubt that's enough to cause problems.

 

[Buzzman12]

Been reading through the thread, and I really believe you're over thinking this whole thing and worrying about nothing.
In warmer weather especially, it wouldn't have been a problem.
Only in extreme cold weather (like I get up here in Canada) the 5W instead of the 0W may have had an effect. Even then, it would have been minimal.
I'm also curious why you replaced brake fluid on a 2022? Sounds like overkill.

Just a quick story. I had a 2017 Mazda 6 (bought new) and the manual stated 0W20. Turns out this was due to the American CAFE regulations.
Everywhere else in the world, the same engine in Mazda vehicles recommended 5W30 in the owners manual.
It is only in Canada and the US that the thinner oil is listed.
I switched to 5W30 at the first oil change, and ran it like that for 6 years. The engine was quieter and much happier.
No warranty issues either. Dealer actually thought it was a good idea.