Your right Mission,and now they are finding that some of the anti-freeze products can be bad for you.If you are camping in it , solar bunk covers would help you stay warmer,your tt is a hybrid right Troop,we have used them all summer on pup and they sure have kept us alot cooler.You turn them in colder weather and they help hold heat in.Anyway watch the weather and drain , better safe then sorry.
srds
Good Camping