The RV is pretty level. I thought about that earlier because it was on an incline. I backed it up to a more level spot on the driveway. There was no heavy usage at all. No a/c's, hair dryers, microwave, etc. Just the refrigerator. I have a little under 3/4 of a tank of gas. I don't believe it's the gas gauge. It seems to have been working o.k. I talked to an RV repairman earlier. He says that it could be the fuel pump. If it gets too hot the gen will shut down automatically. He even told me how to check it but, I don't want to screw with it. I'll be on the east coast tomorrow or Thursday and have my RV guy fix it for me, I guess.