dunno if it matters but why are different name brands of oil filters different sizes? the P.O had a fram oil filter on and i just picked up an stp for now cuz im gonna have to change in a few thousand anyway but its allmost an inch wider? its the right part number n all and the seal is the same diamiter but the filters are different sizes? just wondering....

 

There are several different filter sizes that will thread and seal on any engine.

Case in point There was a oil filter for the Chevy 427engine in a Medium duty truck 16,000 GVW that was huge compared to the regular part # for a 350 which just screwed right on added oil capacity and filtering also.

I go with the largest size that fits on my 22REc engine and buy them by the case.

Could be any number of reasons why that filter was on The fram # I no longer use and have gone to wix was PH8A.

There was a study done I saw somewhere that compared all the oil filters and had all kinds of figures . I don`t remember just where.

 

thanks, i kinda figured it had a little more filtering capacity, good info!!

 

I thought I used to see PH-8A's on older 20R motors and wondered how they work on the 22-RE or even if they fit.
Do a lot of you guys use the big PH-8A?

 

how much bigger is it? i looked it up but doesent say the size

 

anyone got ne part numbers on the big filters?

 

Interesting read on oil filters here http://people.msoe.edu/~yoderw/oilfi...ilfilters.html

 

Another oldie but goodie
https://www.yotatech.com/forums/f2/l...-media-102066/

Napa is nice because you can bring up specs on any filter including length, width, gasket diameter both inside and outside, and thread pitch.

My truck and GTI can use the same filter with the VW filter being the larger. Unfortunately my wifes Infiniti has a different thread pitch. It sure would be nice to just buy a case of one part number to use on all three vehicles... oh well.