[Sunroof]

Your model has been around for awhile and I would bet that Firestone, Goodyear, NTB, PepBoys shops, etc, etc, let alone Castrol, Valvoline and Jiffy Lube oil change facilities have changed the oil on a Cheyenne! What you can do to ease the guilt is buy the filter at the dealer so its genuine Porsche, ensure the oil used is high grade and save yourself, about $175.00 in the process which should be used for a wonderful sushi diner and a good bottle of saki.

Keep the receipt in the glovebox so you can prove your getting oil changes per manufacturer guidelines and feel better about the whole thing. Going to a dealership for an oil change is way too expensive in my opinion.

The Cheyenne probably sits up high enough that changing the oil in your garage thus saving you more $$$$$ would be an easier task.