OK so I have spent the day checking it out, (my new to me 2004 sprinter) and oddly enough all seems to be working (except the central heat, it too hot to get it to turn on at the moment) anyways I rea...
OK, I see where you are coming from. I do drain it if I winterize, the winters are so mild here that I do not always winterize. If I get caught off guard and a colder than normal night sneaks up on me I will turn the furnace on and set it at 55. Also I do use it quite often throughout the entire year. Winter camping is not bad here with the milder temps.