There are plenty of people here running used oil analysis on engines using Champ filters. Has there been any that would indicate that there's a high incidence of filter failure that might affect engine longevity?
I'm pretty sure GM has thoroughly tested samples of the filters they buy (from Champ and others), down to running used oil analysis and cutting open the filters in their test or company car fleets. If I were them, I might even offer free oil filters and and/or oil in exchange for employees returning oil samples and used filters.
My particular opinion is that it probably doesn't really cost all that much to make a quality oil filter. I've used Champion Labs filters and will continue to do so. And yes - I've taken a hacksaw to a few, and there was nothing that would dissuade me from using them. Now Fram is a different matter.
I'm pretty sure GM has thoroughly tested samples of the filters they buy (from Champ and others), down to running used oil analysis and cutting open the filters in their test or company car fleets. If I were them, I might even offer free oil filters and and/or oil in exchange for employees returning oil samples and used filters.
My particular opinion is that it probably doesn't really cost all that much to make a quality oil filter. I've used Champion Labs filters and will continue to do so. And yes - I've taken a hacksaw to a few, and there was nothing that would dissuade me from using them. Now Fram is a different matter.