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Old 05-30-2016, 12:04 PM   #5
WaltBennett
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Join Date: Mar 2013
Location: Hanover
Posts: 1,471
M.O.C. #13325
At least once a year I fill the black tank about 1/3 full and put a cup of dish-washing machine detergent before leaving on at least a trip when we'll be stopping at a full hookup CG. Drain it all out after hooking up, add toilet chem & water, and use. This has worked fine for me.
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