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04-21-2018, 07:21 PM
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#1
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Senior Member
Join Date: Mar 2016
Location: Southeastern CT
Posts: 249
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Dishwasher detergent for black tank
Like everyone else, the level sensors in my black tank show it full all of the time. I've flushed, used cleaners, tried the GEO solution
(H2O softener, Dawn detergent, & water). Nothing has worked.
Tonight in the grocery store, I noticed all the dishwasher detergents. No suds, breaks down the nasty's. Why wouldn't it work?
Anybody tried it?
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04-21-2018, 07:23 PM
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#2
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Senior Member
Join Date: Jun 2017
Location: Tower City
Posts: 255
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I’ve heard of others using it.
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04-21-2018, 07:33 PM
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#3
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Site Team
Join Date: Jan 2011
Location: James Island, SC
Posts: 22,861
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It's worth a try if you care or have no other way to determine your usage.
I never look at my black tank gauge. I know we can stay 6 days before it needs to dump because we are the only ones using it.
Spent lots of time trying to get it accurate, now I use that time for other more productive tasks.
__________________
Moderator
2011- 351RLTS Eagle, MorRyde suspension/pin box,
2017- F350 6.7 PSD Lariat FX4,SRW, SB,CC
Hughes PWD SP-50A, TST TPMS
Gator roll-up bed cover
B&W Turnover ball, Companion Std hitch
Can't find what you're looking on JOF? Try Jayco Owners Forum Custom Google Search
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04-21-2018, 07:36 PM
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#4
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Senior Member
Join Date: Aug 2011
Location: Missouri City, The Republic of Texas
Posts: 5,063
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I’ve had good results using Dawn. I travel with about 1/4 to 1/3 in the tank and a healthy shot of Dawn, 1/4 cup or so. I think the detergent and the sloshing turns the tide. I also store the 5th with the Dawn and water in the tank. The dishwasher stuff will probably do the job too. Did you buy it pre-owned, something left for you by the PO?
__________________
Cheers,
T_
2013 F-350 CC SB 2WD 6.7PS
2013 Eagle Premier 351 RLTS
-SOLD- 2012 X23B
-SOLD- 2003 Ford Expedition 5.4, Bilstein shocks
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04-21-2018, 07:55 PM
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#5
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Senior Member
Join Date: Mar 2016
Location: Southeastern CT
Posts: 249
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Quote:
Originally Posted by RedHorse1
Did you buy it pre-owned, something left for you by the PO?
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2011 purchased 2 yrs ago. The black tank sensors have never worked properly. Fresh water, grey tanks (2) all work fine.
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04-21-2018, 07:58 PM
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#6
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Senior Member
Join Date: Jun 2017
Location: Tower City
Posts: 255
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Have you tried a tank wand? Works best when you are somewhere with excellent water pressure
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04-21-2018, 08:19 PM
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#7
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Senior Member
Join Date: Mar 2016
Location: Southeastern CT
Posts: 249
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Quote:
Originally Posted by Fr8Train
Have you tried a tank wand? Works best when you are somewhere with excellent water pressure
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Used the black tank flush connection many times. I thought a few times wetting the sensors down, letting the crud soften, and then blasting them would work, but so far no luck.
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04-21-2018, 08:21 PM
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#8
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Senior Member
Join Date: Jun 2017
Location: Tower City
Posts: 255
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Quote:
Originally Posted by harryjr
Used the black tank flush connection many times. I thought a few times wetting the sensors down, letting the crud soften, and then blasting them would work, but so far no luck.
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Our rig has a tank rinse, but I also use a wand every so often.
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04-21-2018, 08:32 PM
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#9
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Senior Member
Join Date: Aug 2011
Location: Missouri City, The Republic of Texas
Posts: 5,063
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When the trailer is in storage I’d fill the black tank and drop in some chems and give them a chance to work. It’s also possible the wiring is faulty or damaged. Does it always show full or empty? I’ve found if I have fouled sensors it will read full if they are damp but may show empty after the rig has sat still for a day or two (not in use).
__________________
Cheers,
T_
2013 F-350 CC SB 2WD 6.7PS
2013 Eagle Premier 351 RLTS
-SOLD- 2012 X23B
-SOLD- 2003 Ford Expedition 5.4, Bilstein shocks
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04-21-2018, 09:21 PM
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#10
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Senior Member
Join Date: Nov 2014
Location: Florien, LA
Posts: 1,872
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Try RVDigestit. Follow directions on bottle. I haven’t needed it, but I’ve done it to others and it fixed all of them.
I’m like norty though. I never look at the gauge. I know how long we can go before dumping.
As for what I use in the tank, any home brew I can think of. I always use calgon softener, but then add multiple things that all work. Dawn, purple power, laundry detergent etc. They all work.
__________________
John and Rebecca Dickson
Emma-13 / Little John-10 / Iva-7
2013 Ford F-350 Lariat FX4, CC LB PSD, DRW
2015 Jayco Jay Flight 28BHBE (#8)
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04-21-2018, 09:43 PM
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#11
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Senior Member
Join Date: Mar 2018
Location: Granbury
Posts: 829
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Pinesol works for us...and it lubes the seals on valves!
__________________
2018 Greyhawk 29MVP
2018 Jeep 4 Door Rubicon Recon
Retired and Under New Management (See Spouse For Details)
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04-21-2018, 10:34 PM
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#12
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Senior Member
Join Date: Nov 2014
Location: Florien, LA
Posts: 1,872
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And makes everything smell pretty good. Used that before too.
__________________
John and Rebecca Dickson
Emma-13 / Little John-10 / Iva-7
2013 Ford F-350 Lariat FX4, CC LB PSD, DRW
2015 Jayco Jay Flight 28BHBE (#8)
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04-22-2018, 09:13 AM
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#13
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Senior Member
Join Date: Jun 2013
Location: North Central Louisiana
Posts: 120
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Dishwasher detergent requires really hot water to activate properly. It is also more caustic than dish soap and can tarnish aluminum, brass etc. I would not use it.
__________________
Mike Laupp
'13 Jayco Premier 351RLTS
'17 F350 King Ranch Ultimate FX4 6.7L TD SRW LB BackFlip F1
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04-22-2018, 09:44 AM
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#14
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Senior Member
Join Date: Mar 2017
Location: Sarasota
Posts: 742
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Quote:
Originally Posted by Fr8Train
Have you tried a tank wand? Works best when you are somewhere with excellent water pressure
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Out of curiosity, has anyone ever tried using a pressure washer, with a 90-degree nozzle on the wand, to clean out the inside of the tank and the sensors?
(touch wood) we don't have that problem, but I'm sure it will happen some day, so it would be nice to know.
__________________
IanP, the man from Scotland
Julie, the Lady From Little Rock
Jay Feather 19XUD, pushing a Jeep Grand Cherokee
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04-22-2018, 11:35 AM
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#15
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Senior Member
Join Date: Jun 2017
Location: Tower City
Posts: 255
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Quote:
Originally Posted by WeRJuliian
Out of curiosity, has anyone ever tried using a pressure washer, with a 90-degree nozzle on the wand, to clean out the inside of the tank and the sensors?
(touch wood) we don't have that problem, but I'm sure it will happen some day, so it would be nice to know.
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I haven’t, to many elbows in my plumbing. I’m sure it would work great in some rigs!
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04-22-2018, 01:24 PM
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#16
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Senior Member
Join Date: Aug 2013
Location: Bellingham,Wa.
Posts: 6,680
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[QUOTE=WeRJuliian;631042]Out of curiosity, has anyone ever tried using a pressure washer, with a 90-degree nozzle on the wand, to clean out the inside of the tank and the sensors.
This is what you need for a clean out.
__________________
2010 Jayco Hybrid EXP21M
2013 Toureg TDI
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04-22-2018, 06:53 PM
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#17
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Senior Member
Join Date: Nov 2014
Location: Florien, LA
Posts: 1,872
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I have one of those, but only for washing under Truck as we live on a dirt road. Keep a little water softener in the tanks plus whatever chemical you prefer, and nothing sticks, thus not needing to pressure wash. 15 years of doing this and never had an issue that required a pressure washer. If sensors aren’t working, try the RV digest it I mentioned earlier. Never had it fail on a tank. It eats everything in the tank if you follow the directions.
__________________
John and Rebecca Dickson
Emma-13 / Little John-10 / Iva-7
2013 Ford F-350 Lariat FX4, CC LB PSD, DRW
2015 Jayco Jay Flight 28BHBE (#8)
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04-22-2018, 07:03 PM
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#18
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Senior Member
Join Date: Jul 2011
Location: St. Augustine
Posts: 132
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Cleaning Sensors...Or Not
I still haven't figured out why Jayco installs the tank flush and the sensors on the same tank wall. You would think the sprayer would be on the opposite wall pointed toward the sensors to clean them. One more time......designers don't use the trailers!!
__________________
2014 Jayco Jay Flight 33RLDS travel trailer, now seasonal in the Adirondacks, Honda EU3000 generator.
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04-22-2018, 09:31 PM
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#19
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Senior Member
Join Date: Aug 2011
Location: Missouri City, The Republic of Texas
Posts: 5,063
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I think the “digester” route might be the best. Your issue is old deposits, they’ve had time to solidify and will hold on tight. Adding the digester chems and filling the tank and then let it sit (the more time the better, a month maybe).
__________________
Cheers,
T_
2013 F-350 CC SB 2WD 6.7PS
2013 Eagle Premier 351 RLTS
-SOLD- 2012 X23B
-SOLD- 2003 Ford Expedition 5.4, Bilstein shocks
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04-22-2018, 10:03 PM
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#20
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Senior Member
Join Date: Nov 2014
Location: Florien, LA
Posts: 1,872
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The last guys I did the RV digestit on had been 2-3 years since sensors worked. After letting a full tank of the stuff (1 bottle I think plus tank at 95% or so) sit for a day or 2 then flushing, all sensors worked.
__________________
John and Rebecca Dickson
Emma-13 / Little John-10 / Iva-7
2013 Ford F-350 Lariat FX4, CC LB PSD, DRW
2015 Jayco Jay Flight 28BHBE (#8)
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