our 03 overheated last week without warning. took it to our certified indy shop for repair. there was no coolant in oil prior to the tow. Water pump was shot, temp gauge went red immediately after pump replacement. Tech checked and running temp was fine. Decided it was temp sensor. Tried running after and coolant was found in oil. Said it looks like timing covet and or gasket. Based on the time this occurs cannot do head gasket test . It is a pretty decent unmolested 03. Fix it or ditch it. Thanks Dewebbers!