Originally Posted by Donedroolin
So I used a funnel and poured some RV freeze in the tank flush. Not sure how much went in. After that I blew air down the hose with a small portable air pump. Do you think that is enough. Now wouldn't I see pink stuff come out one of those drains if I loaded it with three gallons . I know some went into the holding tank but clear water came out the drain line did I add enough.
I'm no expert on this winterizing procedure.....but no way do you need 3 gallons of antifreeze in your black holding tank. Half a gallon would probably be too much. The antifreeze will just mix with any water left in the tank and become slush. Water freezing in the tanks shouldn't hurt anything as it can expand and not rupture anything. So a bit of antifreeze at the outlet valve should be all you need. Pink stuff should come out the waste valve when you pull it open.. It won't drain from the black water tank through a low point drain. I did't do anything to my tank flush last year and my dealer assured me that all would be well in the spring. It was. This year I used compressed air to blow out the line. No antifreeze.
My response is to your post above.....re reading your 1st post, I see you used 3 gallons of antifreeze to winterize your trailer....so I was a bit confused.