I use the same product. After dumping my gray or black tank, if I’m not going to be refilling them soon, I pour 4-5 ounces down, followed by a gallon or two of water. It seems to keep them working smoothly, especially if they sit for long during our blistering hot summers.
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2018 JayFlight SLX 212QBW
1999 Ford F-250 Super Duty Lariat SC, 7.3L PSD, 3.73
Transfer Flow 50 gal aux; Andersen WDH; Prodigy P2
😁 "If a man says he’ll fix something, he will. There’s no need to remind him every 6 months.
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