The vent system is sealed ,like I said. There is no opening to the tank. Some people want them full ,some empty. I go empty. We will see....again. I drain ALL my gasoline engines I dont use during the winter. Always have ,always will. No issues. I was just wondering about the treated tank(s).
~ BD. "You won't find me in an old folks home" Pioneer Florida Cracker 1958 Apache Stepside 1958 Apache 1/2 ton Panel 1959 Apache 1/2 ton Panel