Just curious can a fuel filter be two years old when installed and be as good as a new one. I ask because I dont drive that many miles and I want to keep a extra fuel filter in the truck when on trips but it may well be two years old when I change it. I wil never travel enough miles to change it sooner than the 2 year old rule. Also sense there are dates stamped on the filter, if there was a warranty issue and the date on the filter was 3 years old would that be a issue?