I took a short hose and hooked up to city connections. Set air pressure at 28lbs and then blew air into hose. Friend went and opened each water valve until all air. Opened low drain points removed water then turned on pump. A little water then ran out as well. Put air to black tank clean out. Dumped anti freeze in all p-traps. Did outside kitchen as well.
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John Prifogle
2010 Keystone Cougar 26bhs
2021 F 250 6.2
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