Problems? so, a little while ago, we bought this truck from a guy that had no idea what the fuck he was doing with the truck, he had lubricating oil in it, i gave it an oil change and it is still losing oil .... theres no oil stains on the ground anywhere, so im thinking its burning it offf, but it might be something else too, idk if it helps any, but the pipe is lost half way down the truck, so if anyone could give me help on how to make this problem go away, id appreciate it, oh and onemore thing, i doubt it has anything to do with it, but its fuel injected, and it loses the oil within the first 2-3 days of putting in more oil ... so if ANYONE can help me find a solution so it keeps the oil, id really appreciate it, thanks, OH and in the title amounting to gas problems, i changed the plugs, and with full oil it gets 21-23 MPG highway,about 19 MPG in town, and when it loses oil, obv. it gets crappier MPG, sooo, HELP PLEASEEE !!! thank you