Like Gary, I have used Fram oil filters in my truck off & on without incident for almost 100K miles. I have also use the Fleetguard filters - same good results. The oil is only slightly darkened at change time anyway (by the book=6000 miles) because the Cummins engines don't create nearly as much soot in the combustion process as the GM 6. 5 and the Nav/PS 7. 3 that I have also driven (but NOT owned!!). Want some free advice? Don't freak out just because some friend of a friend's cousin's brother-in-law passed along a "he said... she said" whodunnit.
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95 2500 SLT, clubcab, 2wd, longbed, a/t, 3. 54, 144K miles, "all the usual refinements"
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95 2500 SLT, clubcab, 2wd, longbed, a/t, 3. 54, 144K miles, "all the usual refinements"