If it is certified pre-owned, Dealership suppose to do ALL maintainence listed on the book that it is due for.
that's including Tire should have more than 6/32" tread depth, and brake needs to have 25% or more life.
Internal maintainence wise, All it really need is Tune Up, Trans service, and Rear Differential service, and Transfer Case service.

 

thx bro... they did everything but the tune up, since im trying to save mpgs can i get top notch spark plugs to address that or would a cold air intake help the situation... i want to be able to afford gas before i go buying grilles and lights to make her pretty.
any help is great help

 

NO! stay with the el cheapo Champion copper plug. hemi has 16 spark plugs, if you buy exotic spark plugs, it will be a heafy bill.
Cold air intake will probably decrease ur fuel economy. It adds an extra pound to your right foot.

 

Your better off buying your grille and lights rather then worrying about mpg's with a CAI. Optimum gains across the board on a CAI are at WOT, not exactly the best time to try and save for gas money, lol. Unless your toying with forced induction.