Black tank says full but it’s empty
Fairly new RV. Have rigorously followed instructions regarding emptying only when full, keeping water in the bottom, using a black tank tablet. On a recent trip, I was surprised to see the black ta...
Forum Discussion
Clay L wrote:SoundGuy wrote:
Wildly inaccurate black & grey holding tank monitor readings are the RV industry's way of laughing at us all while keep a straight face. :W Until RV manufacturers completely ditch the use of in-tank monitor probes and upgrade to externally mounted sensors RV owners will continue to complain about this. Unfortunately, because manufacturers will always take the least costly approach this will never happen and as a result we'll all be complaining about this same issue years from now. My advice - ignore those tank monitors and simply use common sense to know when it's time to empty those tanks.
Since at least 2004 Winnebago has been using the TrueLevel external sensor system. Guess what? They are still inaccurate because crud builds up on the tank walls and fools the sensors. The Garnett SeeLevel is considered by many to be the best out there and when enough crud builds up on the tank walls it also quits indicating properly.
we have the garnet see level, have had it for 5 years, we camp 3 months/year. Yes, the warn that if you let crud build up it can affect the sensor. So far ours has been quite accurate. I flush the black tank at home, and use laundry detergent in the black and grey tanks to help keep any buildup off the walls. So far so good. However, I suspect if you let grease build up on the grey tank walls it will eventually affect even the seelevel, likewise with black tank buildup.
