How extensive your winterizing needs are depends on the climate you live in. Your profile doesn't say.
I live in South Texas. I just blow out my lines , drain the water heater and rinse it out , open low point drains , add the pink stuff to the traps and a gallon or two in the black tank in case there might be any solids residue. Check tire pressure one more time and put it in storage.
Once in storage I pull the battery to take home and put it on the battery tender , lay several air fresheners out , put 3 air rid containers out , crack a vent and that's it.
If you mention what climate you live in somebody will chime in I'm sure. Up North they fill all their water lines with the pink stuff.
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