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Old 10-09-2019, 06:06 AM   #4
Butchy
Montana Fan
 
Join Date: Sep 2016
Location: West Melbourne
Posts: 227
M.O.C. #18980
I use one or two capfuls of liquid Rid-X, the regular version. They sell an RV version but it is just watered down. When I flush the black tank there are no solids visible (except what recently went in), just a grey liquid. This has worked very well for me and I have tried many of the other products...
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Butch and Kathy
2016 3160RL Legacy, Sailun S637, Centramatic Balancers, 2-T105s, ARPrv
2016 F350 6.7L SRW
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