Me personally I pre- purchase a MOPAR service contract through my dealer at a huge discount. I think I end up paying around $75 per oil change when all is said and done. I buy 4 oil changes at a time. I would just as well let them get all dirty and deal with the waste oil every 10k - 15k miles or so. I also like that they keep all my service paper work in their system just in case I have a warranty claim.
I do do all of my own fuel filter maintenance due to the silly labor rates to change out the filter and water separator. I purchase my filters from www.genosgarage.com and they can tell you about Fleetguard vs Mopar vs Parker (Parker for the rear fuel filter/seperater) . (All the same)