Forum Discussion
Artum_Snowbird
Sep 28, 2015Explorer
Drain the black tank really well, then clean it out really well. Then put 2 or 3 gallons of RV antifreeze in and pull the drain valve again until you see the antifreeze coming out the pipe. Now your valve and drain pipe are filled with antifreeze. Do the same with the gray tank.
Use it when you have to, and mix up a bottle of half water half antifreeze to flush with.
Use it when you have to, and mix up a bottle of half water half antifreeze to flush with.
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