Here's a Winterizing Checklist I found from a YouTube I watched recently. I would give credit, but don't find it on this sheet. If you PM me with your email, I can send you a PDF of the original, which is laid out very nicely, with check boxes.
RV Winter Prep and Storage
Protect Plumbing From Freezing
- Bypass water heater
- Drain and flush water heater
- Remove water filters if any
- Option 1 use air compressor to
- blow water out of water lines
- Option 2 use RV Antifreeze with
- water pump for each fixture
- Don’t forget the low point drain
- or city water connection
- Use RV Antifreeze in sinks and
- all drain traps
- Fully empty all storage tanks
- Black Tank
- Fresh Water
- Grey Tank
- Galley Tank
Check RV Weather Seals
- Inspect roof for any
- penetrations or cracks in caulk
- Inspect side walls
- Check door and window
- sealant edge
- Check seams and any
- penetration
Tires Protected
- Tires inflated to Max Cold PSI
- Fully supported on flat surface
- Option to elevate on rubber
- mat surface
- Lower RV Stabilizers.
- Cover tires
Rodent Control
- Seal any hole or possible
- entrance with wire mesh and
- foam or caulking
- Use preferred deterrent
- (strobe light, Bounce Dryer
- Sheet, Ivory Soap)
Battery maintenance storage
options
- Use solar to keep batteries
- charged
- Plug in RV once every 3 weeks
- for a day to keep batteries
- topped off
- Pull batteries out to keep
- charged for convenience
Fuel System
- Fuel stabilizer in fuel tank and
- engine
- Fuel stabilizer in generator
Extra
- Check on it occasionally inside
- and out to head off any issues.
Hope this helps.
Cheers!
John