I just bought a Trail Lite B+ 211s with 8.1 Chevy engine. This is my fifth motorhome (others range from an old 20' Vagabond, and three Winnegagos, from 19 to 32'. This vehicle is fantastic. I am...
I drain the tank whenever it's not going to be used. You should be able to pump it just as dry as the drain hose gets it because they are at the same level. I don't know about your air question.