Grey tank stopped up won't drain
we have always left our grey and black tank valves open as we are full timers [living at a campground 365/24-7] for past 4yrs. This problem of the grey tank getting stopped up only started last month...
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My galley tank did that last summer. Just trickled out so I put a bunch of tank cleaner in it and drove to the next camp ground and it worked find after that, so it must have had a grease plug in it.
