We use NAPA filters at work when we can't find O.E. and have not had any problems... for our big truck applications we pretty much stick to Fleetguard. I'm sure NAPA and Wix and the other reputable brands are good filters, I just always use origional equipment filters. period... My Chevys get AC Delco and my bike gets a Triumph filter, if I had a Ford it would get a Motocraft. Just my personal preference... and opinion.
