Steve,
there a site done by an amature that wanted to look into the difference between oil filters for his own info, and he made the website with all the cool info.
Info started pouring in and one piece was a internal letter from an "-Ex- Fram employee"... .
The letter said that they offered the warranty because they believed that for the most part no one is gonna be able to prove that a fragment from the filter caused engine failure...
Other filter companies went after the site, but Fram never did , nor attacked the validaty of the letter! He had some lawsuit problems and in the end had to divorce certain information from the page that did all cutting open and measurements of the filters.
He started another webpage with the other info that caused the problems... stating that it was all his personal opinion... .
(geez what happened to freedom of speech)
With that and some other info I stopped using Fram.
To Fram's credit, I thought I read a post here on TDR from a gent that lost and engine, both DC and Cummins would not honor the warranty since the Fram was not an approved filter and a piece of the filter caused the failure. . but from the info from Cummins, Fram stepped up and paid for the engine.
Thought I had my mind made up but not sure now... was the letter just an fraud and Fram didnt care?
Or does Fram count on the fact the DC, Chevy and Ford cant do and autopsy as Cummins can? ( assigned risk )
All I know, since all the stock stuff is good to great quality and wont void my warranty, I've been buying stock stuff from Geno's... . or my local Do$ge $ealer...
It aint worth saving a few $$ here and there compared to what I'm paying for the truck via payments to the bank.
Bob