Wix filter vs Purolator

I've always used wix filter and I've always had a slight knock while the engine is cold. I just figured it has 160k miles and I'm not the original owner.

I couldn't get a wix this last time so I used a Purolator boss. No knock at any temperature.

I changed back to wix this service and the knock was back. After two days I changed back to Purolator. No knock again.

 

Hmmm.....

 

The Boss boasts a, “Double-Helix Metal Center Tube built with superior strength and designed for optimal oil flow”. The Wix, I presume the XP, boasts “hybridized synthetic fibers”. Maybe other more free flow filters will reduce the chatter as well.

 

I did manage to find this YouTube channel

https://youtu.be/mYi640pMjWA?feature=shared

 

Certainly interesting, every 2.7 I've had has a cold weather knock... I should say sub 25*, because above that they're silent.