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Black Tank Dumping
I do the same as others. I drain the black tank with the sprayer on. Leave the sprayer going 20 mins, usually the pipe is clean water. I close the black tank valve with the sprayer on and do that 4-5 mins and then dump it. Do this 4 to 5 times. I also have a Flush king and I will dump the gray tanks and then back flush each gray tank with the flush king. Amazing what comes out of the bathroom gray tank. Do this twice. When all done I put about 2 gals in the black tank and put some liquid automatic dish washer soap down the toilet. Drive it to the next stop and usually dump the black tank right away and then put 3-4 gals in the tank and put the chemicals in the black tank. Seems to work good for me. I also added another slide valve at the end of my pipe. Before when I took the cap off to hook up the hoses I would get a bunch of junk coming out. This has solved this problem.
Jim Bonhote
2014 3582RL, 2015 F350 Platinum
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