This is our first trailer with a black tank flush. How do you winterize it? I use my pump with a hose into the jug of anti freeze to winterize the rest of the camper, but theres no way to winterize t...
I'd just blow the flush valve out with an air compressor and call it done, or if you can pump a few ounces of RV antifreeze into that valve, it will not hurt anything.
If in NY, I'd winterize everything else "wet" with the pink stuff. Make sure to get the RV antifreeze without ethanol because ethanol is hard on the O-rings and seals.
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