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Old 07-08-2018, 04:22 PM   #1
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Join Date: Jul 2018
Posts: 2
2nd Black Tank System

Hi! We are new to the RV world and just purchased a XLR Boost 37. We have emptied the black tank and then rinsed with the gray tank BUT we are unsure the best way to manage the SECOND black tank located in the back of the camper. It does not have a grey tank reserve. Does the water flush include the second black tank?? We havenít found any information on how this system works!

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Old 07-09-2018, 12:21 AM   #2
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Join Date: Nov 2011
Posts: 19,905
Lately new campers with 2 black tanks come with 2 black tank flushes.

See if you can find a second flush.

2018 Ram 3500 DRW/crew cab/long bed/4x4/4.10 gears pulling a 2017 Spartan 1245 by Prime Time
Checkout my site for RVing tips, tricks, and info | My family and I have fulltimed since June 2015
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Old 07-09-2018, 08:02 AM   #3
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There is a gray tank in the front bathroom. We did use the flushing part and I think that worked with the back also. We are just trying to find out how others are using it to be most efficient!
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black, black tank, tank

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