Our 08 42' Contessa is parked on our lot in Indio.  We moved it down from Bend in early October.  Came home to Bend in the toad for the holidays and will return to the coach right after Christmas.  The coach is plugged in to power, water turned off and its on the levelers.  When we get back in a couple weeks we will stay in the coach until probably April sometime.  My question is this.  Should I unhook and drive the coach every now and then?  I don't want to just fire it up in place as such does not build sufficient temp, which is not good for the C9s.  Whats the protocol for extended use as an apartment relative to the mechanicals?  Thanks?