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Old 09-02-2015, 05:41 PM   #1
Junior Member
Join Date: Aug 2015
Posts: 21
black water gauge

Hi, we justHaddon our maiden voyage in our Wildwood and after emptying our black water tank, the gauge still reads 1/3 full. Any ideas?

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Old 09-02-2015, 05:51 PM   #2
Senior Member
Join Date: Mar 2014
Location: Eastern Ontario
Posts: 478
Have you used the black tank flush ?
Leave a few gallons of water only in the tank when you travel, it catches anything that may have remain in the tank while dumping.
3 years doing this this and sensors are reading chemicals or soap or whatever either.

2014 Ford F250 Lariat SuperCrew 4x4 tuxedo black
2015 Rockwood Signature 8310SS Diamond Edition
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Old 09-02-2015, 05:56 PM   #3
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Join Date: Aug 2009
Posts: 627
These gauges are notorious for being wrong. There are several upgrades that can be done. 1) Horst Miracle Probes. 2)Sea Level gauges. The Horst has a hood like cover over the top of the probe to help with toilet paper and "stuff" from getting hung up on the probe. The Sea Level gauges are ultrasonic I believe and mount on the outside of the tank.

Short of changing the gauge probes, using a tank flush system can help. If there is not one already in the tank they make a sprayer that goes down the toilet piping and when connected to a hose, the nozzle spins to flush debris off the walls and probes of the tank. I have used both of these with fairly good luck. Of course the one you shove down the tank can get a little messy when removing it.

After a time, you should be able to make an educated guess as to the level of the tank by your normal usage.

Hope this helps.

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Old 09-09-2015, 09:29 PM   #4
Senior Member
Join Date: Jul 2015
Location: McAllen, TX
Posts: 193
1/3 all the time

Mine has only shown empty when rig tipped toward the drain and left open for several hours. First sensor is mounted very close to the bottom of the tank. Been this way for 3 1/2 years and trading it off.
Charles & Martha Myatt
2009 Duramax w/Transfer Flow Fuel Tank
2016 Flagstaff V-Lite 30WFKSS

Almost South of the Border
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black, black water, water

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