On the same note as winterizing...my previous TT had a valve and separate suction hose on the input side of the pump. All you had to do was turn the valve to the suction hose, run the pump and flush all the lines with pink panther pee. With a little modification, can't you just unhook the output line from the tank (or install another line with a similar switch-over valve), extend it a bit and stick it in the antifreeze...doing the same process. Seems this would better flush all the lines completely and not have to worry about residual water in the belly of any lines.
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Now an SOB
Traded Thor for Melbourne Prestige 24NP
2018 THOR Chateau 35SF
Two Labs, Bugsie & Blondie
Blondie passed in 2020 at 5 to Leukemia
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