As far as the oil gauge, I would recommend replacing the oil sending unit to see if that is the problem. It is easy to do. Keep in mind, I am assuming that there was no knocking or ticking coming from the engine.
As far as the lights, take the car to a nationally recognized parts store and have them scan the computer for codes. Most will do it for free, so there will be no money out of pocket. THis should identify what is causing the lights to come on. Before you leave, ask them what the codes are and to reset the computer to see if the light comes back on.
Let me know what you find.
Joe
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Wednesday, December 9th, 2009 AT 10:14 PM