After I pump all my lines with anti freeze (if you have a fresh water hose under your unit don't forget it) and do the dryer I drain them with the drain valves leaving only anti freeze in the low spots of you system.
In the spring it leaves very little anti freeze to be cleared from the system.
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2007 42' Friendship Quattro
2007 Liberty Toad
No Rodents
Kids raised and only barrow money
400 Cummins Bad Milage
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