Looks like CX-90 stock 21" offset is also ET45:
18x8" et45 20.97 lbs/9.51 kg
19x8.5" et45 23.17 lbs/10.51 kg
21x9.5" et45 27.98 lbs/12.69 kg
Comparison with my winters looks acceptable, but might be a bit narrow.
Ha!, that is exactly what I wanted, but never even hoped for )) I never need those extra seats but smaller SUVs are usually too small. Very strange though, given Mazda have the CX-60.
For me it sounds like there was another reason that was hard to identify or simply a production defect. Any engine has 1000 mile break in interval and it was very common back in the day to change the factory oil early. It would be too bad of a design for a major manufacturer if an early oil...
My latest experience is that pads gets out silently on CX-9. No squeaking. Our friends' car got front/rear completely out unnoticed and had to replace rotors as well. Breaking performance was very bad until they fixed it. If non-technical person drives the car it could take some time to notice...
Oil Analyzers use Horizon labs, so it is not exactly under the Amsoil umbrella. And I never noticed any bias towards Amsoil in dozens of reports I got over years from couple of labs.
Sharing an experience with Rotella 5w-30 (multi-vehicle).
This oil turned out to be particularly good for engines with dilution. Got a hint from WRX forums and got repro on both of my cars. Rotella results marked with red:
1: 2015 WRX started to show diluted analysis after a Stage1 protune...