Understanding Beta ratio?

[mpgo4th]

I was on the Napa filter site earlier.
They list the Platinum filter for my car at B2=20 and the Gold at 2/20=6/20.
I have no clue what that means. Can someone fill me in?

 

[geeman789]

I don't think WIX / Napa do either ...

WIX has never been very forthcoming about oil filter efficiency, and many people have asked. Read this thread ...


https://bobistheoilguy.com/forums/ubbthreads.php/topics/3322042/1

 

[ZeeOSix]

^^^ As that thread shows, WIX does not use the industry standard for beta ratio format. They use their own format as explained in detail in that thread and about 25 other threads.