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Old 08-27-2014, 05:39 PM   #1
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Grey Water tank draining

My grey wayer tank shows 2/3 full after valve has been open for a long period of time. I have been living in my camper for the last two months waiting on a house. I have already had to flush out the black tank due to a build up of SOMETHING..... How do I flush out the grey tank, any thoughts???

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Old 08-27-2014, 07:19 PM   #2
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It could just be from condensation build up on the tank walls.

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Old 08-27-2014, 09:53 PM   #3
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Close the drain valve, add a cup or so of dish water detergent, and all of the hot water your rig's tank has. If you were to drive around that would help alot. If not ,wait a bit drain and repeat. Oh fill as close to top if staying stationary
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Old 08-28-2014, 03:31 AM   #4
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Could also be that your sensor is incorrectly reading the level. OEM tank sensors are notorious for wrong readings. Suggest you consider installing a set of Horst Miracle Probes to replace the original ones. They really do work.
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