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Old 07-14-2016, 01:21 PM   #1
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Downy Unstopables in Gray Water Tank

Has anyone ever used Downy Unstopables in their gray water tank? They are a very concentrated form of Downy. Just wondering if anyone has any experience with them.


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Old 07-14-2016, 03:35 PM   #2
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Limit the amount of grease you put down the kitchen sink and you won't need to add 'perfume' to the tank. If it smells bad, add a couple of oz. of Dawn to cut grease before your next long ride in the RV.


Bob & Donna
'98 Gulf Stream Sun Voyager DP being pushed by a '00 Beetle TDI
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Old 07-14-2016, 05:34 PM   #3
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We do what Rob does every couple months. Worked for us for 9 year full time
Squeeze of dawn in a full gray tank drive down road, dump
Ron & Linda
2000 Dynasty 38PBS
Full time since 2007
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Old 07-14-2016, 08:55 PM   #4
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We always add a couple of gallons of water to each tank... and than add a scoop of OxiClean to each tank... on the last day heading home... we flush the black tank and add at least 5-6 gallons water.... add our OxiClean and than at the last stop before we get home... we dump that... usually very nasty... its our belief that the water, warming in the tank with the OxiClean does a good job in cleaning out the tank...

But by all means... do what you thinks works best for your...
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Old 07-15-2016, 10:53 PM   #5
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The only thing we use in our black and gray tanks is Costco brand liquid Laundry detergent drop in pillows. I put 4 of the pillows in each 50 gallon tank dissolving them in the toilet and bathroom sink first. I normally brush the toilet detergent before dumping into the black tank. Never have any oder even in hot weather. We normally camp for 4 to 5 day without dumping either tank. I always keep both tank valves closed even when we have full hookups which isn't very often. I only dump my gray take when it almost full, the full tank dump helps clean out any food waste that gets in the tank.
1999 35 ft. Dolphin 5350, F53, Banks System, 5 Stars Tune, Air Lift Air Bags, Koni Shocks, Blue OX TruCenter, TigerTrak track bars F&R, Roadmaster 1-3/4" rear auxiliary sway bar, 2004 F450 Lariat 6.0 Diesel Crew Cab DRW, 4X4, B&W Custom Truck Bed, GVWR 15,000, Front GAWR 6,000, Rear GAWR 11,000, GCWR 26,000, 1994 36fT Avion 5er, GVWR 13,700
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tank, water

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