Originally Posted By: kschachn
I think their warranty requirements are quite reasonable as are the ones for ExxonMobil's guarantee (theirs is even less stringent). If the oil company can't prove that you used their oil why would they pay a warranty claim against it?
Of course. What I'm getting at is that a specific oil filter requirement gets problematic. They could make one, but open a can of worms at the same time. Require a certain brand, and are they all of a sudden required to warranty filter issues, too? Require a certain beta ratio standard or efficiency somewhere, that gets difficult, given what these filter companies often choose not to publish. Or make a certain requirement that no one meets, and it gets silly.
The only conceivable thing that would be feasible to put in warranty requirements would be for OEM filters or filters marketed by the oil companies themselves (i.e. Mobil 1 filters, Pennzoil, Rotella). But, I maintain that to solicit participation in their programs, one doesn't want to make too many hoops to go through. The Pennzoil and Quaker State warranties have enough hoops as it is.
As for the OP's idea that any specified filter would do the job over the life of a vehicle, I don't dispute that. Personally, I want something that's reasonably constructed, reasonably priced, and readily available.