Bought 99 chevy lumina used 5-6 months ago checked everything out, found nothing serious with car just minor tune up needed and new tires. gave car to my son as a good first car, last night took him to fill up gas tank and smelled gas, looked under the car and saw a drip coming from what appears the gas tank. parked car at home and looked under car, no leak thought maybe i spilled gas, this morning he left for school and there is a visable puddle from where he was parked. *js