Oil filter K&N or Wix

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

Amsoil and Subaru filters. Other vehicles with horrible oil filter locations I use K&N because I can use a socket to pop them off.

I'm trying out that Rotella T6 5W-40 some of y'all talk about. Just snagged it off Amazon.

I also use K&N filters cause they've got a 1" nut welded on top.

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

I also noticed it seems like it made more noise with a K&N oil filter vs Mobil 1 filter.

Mine was my oil filter! I used a k&n because they come with a oil change reminder sticker. Leaked like mad.