Better than having it drain from a hairline crack in the tank all winter. That explained the oily residue on the floor. And my missing gas. Oh, and back on topic, if your motor is at full operating temp in 5 minutes, why would it get hotter in 10, 15 or 20 minutes more? The gas still burns at the same temperature, the motor still cools at the same rate (moving rate, still rate) It only gets so hot. Same thing as a blow torch flame, it only gets so hot, the flame don't get hotter with time. Ehhh, people are dumb.