ok i bought my xfire about a month ago. so i drove it about two weeks and those wrenches with negative numbers started showing up. so i said ok maybe it needs an oil change. so i took it to the dealer and got the oil changed. well it number went to zero. now we are back to negative 700. but i just had the oil changed. i have tried to reset it using a method i found on here, but with my luck i did not work. so i took it back by the dealer and some sweaty fat guy set in my car and jiggled the key in the ignition and said ok its done. well i get back in my car and it still says -700. i said thanks for resetting it and he said your welcome just like he did a great job. so does my car need something besides an oil change i don't have a owners manual. someone please help i hate not knowing what my car needs.