Oil filter Wix or MOTUL

Wix is considered to be good, and it’s not expensive and readily available (can walk into local O’Reilly and buy off the shelf). Subaru OEM works if you’re close to a dealership or think to order it; I never remember to order and my local dealer is terrible, so I avoid them.

Stick with the wix, rebuilders of rotory engine's suggest that brand alone. Given the necessity of the filtration needed for those engines, that's all I use for k20, 404xxxkm and running strong!

The WIX oil filer still included all the gaskets and a copper crush washer.

Pennzoil and a wix filter, 30 bucks total and 10 minutes of my time.

Then go buy a Wix. Or go to the dealer. Leave the cheap stuff (and Fram) on the shelf.

Engine is running smooth as butter and gets over 30 mpg on the freeway, so she seems to be fine with it

I use a Wix 57356XP filters and Mobil 1.

Wix or the Black Mazda filters.

I would highly recommend Rock auto, there website is simple old school but they are no bs auto parts store and will only show what does fit. They often show the real part your buying (say for tie rod), I've bought thousands of $ of brakes and suspension components over the last 20 yrs and always correct, they often sell OEM parts or the direct suppliers version of OEM which is unique. It will take some time for most of the aftermarket parts for the CX50 but at this point WIX or OEM Mazda are going to be your best bet for oil filters

Changed my '06 BPY oil today, noticed large copper flakes in the oil filter and at the bottom of the pan when draining oil.