Yeah I filled it up that night until it would hold no more! Reason is, the gauge is inaccurate and we try to keep it filled. One of our local supermarkets has a gas station and offers "fuel bucks" where you get .15¢ off per gallon for every $150 you spend. Well we thought the car was low on gas, but it only used 5 gallons of gas, so we (or I) was trying to get all of the gas we could with our discount. I guess I went overboard... maybe nothing wrong with the car at all and I simply overfilled it?

Thanks again!