I use Wix. Made in the USA. I buy a dozen in bulk at rockauto. Recently I've started to slice open the filters after they are used. I'm also using a FilterMag which I see helps to trap small metal particles on the inside of the filter can.
Isn't the nut on the bottom?Napa gold (wix) here also. I have run K & N.only complaint is the cheezy not really a nut on top.

Not when it's in the boxIsn't the nut on the bottom?
![]()
I think the nut is the one putting it on.Isn't the nut on the bottom?

I check to make sure the filter element has not degraded. The FliterMag magnet catches some fine metal that other wise would have been caught in the filter.I also use Wix on everything except my daughter’s car, she takes her Honda to an oil change place where she’s goes to school.
Are you finding anything interesting in the filters you’re cutting open? (construction, not engine bits)