I just did everything on my rig. $50 for fuel and oil filters at International here in Tucson. Walmart has our air filters but are asking over $60. If you can find a place that sales Donaldson products (OEM Filters)and it will save you $10 or more. Gotta love these trucks, I mean who really needs to buy engine maint. items from ford when our trucks were bred from BIG RIGS?? LOL