We have had a TT for 4 years now and just picked up our new Jayco this afternoon. Our walk through was good but the person had been there three weeks so I am glad we knew most of the general information. Here is my question, I was always told that the black water take should be near full before dumping and the grey as well so the grey will push out the waste in the hoses. The guy today said it did not matter, but I think that response is wrong.Just checking with this groupThanks for the assist.

He was wrong. Go with what you know!

You are correct, the advise you received is dead wrong.You can dump your tanks if they are not full, provided you can add water to rinse them out and push the remaining contents out. If your camper came with an outside hose washer connection, then you can always attach a water hose and let it spray out the tank. These work pretty well, but also are prone to getting clogged up over time.Another option is to drain the tank (even if not full), then fill it about half full by running water in the toilet, then flushing.Another option is the drain the tank (even if not full), and back-flushing the gray water into the black (if both tanks drain at the same outlet). You attach a flush king style 3rd valve. Drain the black completely. Then close the flush king. Now open the gray and let it back-flush into the black. Wait about 10 seconds and then close the gray off again. Now open the flush king and let the black drain again. This time it will pull more contents out. Repeat this a total of 3 times and your saving water, using the gray water to wash out the black tank, and your black tank will be almost completely clean.Another option is to use a toilet wand. You attach it to a garden hose, stick it down the toilet and turn the water on. It sprays all directions inside the tank. It's the same principle as the built in flushers, except you doing it with a wand.If you do any of these methods of dumping, then yes, you can dump with less than full tanks.If you don't want to do any of these methods, then definitely wait till the tank is good and full, then dump. After dumping, add a bit of water to the tank (3 or 4 gallons), and then drive to your next destination. The water in the tank will slosh around and help clean the tank by beating up any solids left. Once at your destination, drain it completely and start all over using your tank.Lack of water is your black tank's worst enemy. Be exceedingly free with water in your black tank. You'll always have a happy "potty" then!

Full black followed by gray, always

fla-gypsy wrote:Full black followed by gray, alwaysDitto on what Fla-Gypsy said.

We have had a TT for 4 years....the person had been there three weeks The guy today said it did not matterYou already knew HE was incorrect.

Black Water Tank | Good Sam Community

TravelinTheUSA
Explorer
May 13, 2016
I never fill my tank going away only weekends. I just make sure I just flush out the tank the best I can. I will often just flush the toilet a dozen or so times to get plenty of water and then dump.
brirene
Explorer
May 12, 2016
It doesn't matter...to him, especially once you drive off. And your Ford Ranger will pull anything on the lot!
Community Alumni
May 12, 2016
Well he is right if you don't mind "left overs" in the tank and in the hose lol. Unless he has more than 4 years of experience then what you know trumps what he thinks.
rockhillmanor
Explorer II
May 12, 2016
X2

I found that 99.99% of all sales people at RV stores have NEVER owned an RV.

Just ask them if they have ever owned, driven or even rode in an RV.
The look on their face is priceless as they now have to answer you with no.
Cardinals
Explorer
May 12, 2016
Thanks everyone.....I knew he was wrong but just wanted to confirm.
gbopp
Explorer
May 12, 2016
If we all believed salespeople, there would be fewer RV's on the road.

Experience (which you have) is the best teacher (which he isn't).
creeper
Explorer
May 12, 2016
I've never dumped a full tank. We never go that long of a trip (1 month max normally) . I'v been dumping for years at 1/3 a tank. Sometimes I add more water if possible. I use the GEO method for the most part for tank treatment. I'll do the tank rinse every other dump. Never had a problem in past 16 years. We just make sure to use lots of water when using the facilities.
Old-Biscuit
Explorer III
May 12, 2016
We have had a TT for 4 years

....the person had been there three weeks
The guy today said it did not matter

You already knew HE was incorrect.
Alabama_Jim
Explorer
May 12, 2016
fla-gypsy wrote:
Full black followed by gray, always

Ditto on what Fla-Gypsy said.
fla-gypsy
Explorer
May 12, 2016
Full black followed by gray, always

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