I just finished giving the Xfire a full service today. Costs as folows:
Oil Mobil 1 0/40 (ebay) 40.00
Oil Filter M.Benz. 8.00
Air Fillters M.Benz. 22.00
Total Cost 70.00

Chrysler wanted 360.00 to do this! Thats one expensive stamp in the book!
I picked up 16 x 1 litre Mobil1 0/40 for 5.00 each delivered on Ebay.
Now that the car is coming up to 3 yrs old Im not bothered about the stamp in the book any more.
Steve