Black Tank Washout Problem

1. I know my comment will open a can of worms.

2. I do not know why people washout blackwater tanks. Leave a few gallons of water in the tank and drive down the road and it will wash itself. If there is no place to dump after the drive home simply leave the small amount of **** in the tank. If it dries up over the winter (it probably will not) in the bottom of the tank no big deal. Again a few gallons of water in the tank on the first trip next year and it will be ready to dump when you get to the campground.

3. The sensors are not going to work most of the time anyway.

In summary, I would not do anything. I have been FT for 10 years. Before I FT I "summer camped" for 15 years. I never washout my tank.

I agree. My Winnebago Warrior is 27 years old, and we have owned it for about 10 years. Use it at least once a month. I've never washed or rinsed out the blackwater tank. I put a "poop pellet" in the tank at the start of every trip - one of those packets of enzymes that breaks down the sewage. Then at the end of every trip, I empty my freshwater tank by using a little block of wood to hold open the toilet valve and I allow it to fill up, and then I empty the rest of the freshwater tank into the greywater tank.

Then I go dump the tanks, dumping the black first and grey second to somewhat flush out the hose. We never got a "pyramid", and in fact you can look down the toilet into the blackwater tank and while it is dingy, it is still mostly translucent and light shines through it. I've never bothered with hosing out the tank or any other kind of maintenance to it.

Also my LED level indicators work perfectly. The only time they read strangely is if the tanks have been recently disturbed by water flowing into them or if you are going down the road and they are sloshing around.