I came across this the other day:
http://www.bullittarchive.com/5000/5...arison_Kit.pdf
Note where the by-pass valve is located in the expensive Mobil1 and K&N filters.
I've always trusted the Wix quality.

 

i have had very positive results with the amsoil filters on my vehicles they appear to be high quality and are cheep enough 12$ i think.

 

are u a rover owner with too much cash ? heck i am tired of only lighting cigars with hundred dollar bills ? what u too ? well i have found a solution. the ultimate filter for only 212 list price
SS-2004 - K&N Performance Products, Oil Filter; Billet direct from K&N

maybe its good but wow

 

Cheap? I don't consider almost three times the price of Wix "cheap".

The point was the Mobil 1 and K&N that people $10-$12 for because they are good filters have a poor by-pass valve design that can let dirt contaminate the oil.

 

i know tom it is a good tech article i sometimes go nuts siting here watching the kids with no outlet sorry ....

i will say wix makes a awesome product at a fair price. its a good choice

 

I dont overpay for oil filters, Wix and Baldwin are my filters of choice.

 

I run the Amsoil filters with long drain intervals with Amsoil, and I get great oil with great filtration and it works out to a fair price. I have had oil analysis done on my D2 oil to gain more confidence that is is still doing the job over the years I have had the D2, and now run the oil a little longer than when I first began using it with good results. To each there own. I do like Wix, NAPA Gold, Baldwin, and Donaldson products as well, and use them on my older MB that Amsoil does not make a filter for, so just change the filter and top off the Amsoil for those long drain intervals.

 

No one would ever accuse you of that.

 

Tom, is there a similar comparison to Purolator / MANN? Is there a WIX with the jumbo capacity?

 

Hahaha!!!
You know me to well Tom.