How do I winterize my 2003 Winnebago Minnie? - Cars & Trucks

To start either put in an extra 20psi in all tyres ( tires ) or
take them off and lay down.Take out plugs and clean then put
somewhere dry.You can then if you wish add small amount of
oil in plug holes in summer and turn engine over on key or by
hand would be better ( covering plug holes to prevent spray )
You could cover holes during winter as well to avoid damp getting
into engine.The small amount of oil serves to lubricate rings on
pistons without breaking or scoring.Fill gas tank so less water/
moisture in tank.And then trickle charge battery.I would also
cover engine with blankets,and probably drain water to prevent
expansion and cracking.
Well that is my take on it and what l do to my Aston Martin.
Luck

You need to blow the all ware lines clean with a air gun nozzle. Empty/ drain all water storage units and pour windshield washer fluid or pool safe antifreeze in toilets and let stand. I would remove all batteries and stored with a 2Amp trickle charger until spring