Go Back   iRV2 Forums > MOTORHOME FORUMS > MH-General Discussions & Problems
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on iRV2
Thread Tools Search this Thread Display Modes
Old 11-28-2011, 11:44 PM   #1
Senior Member
mr300ce's Avatar
Fleetwood Owners Club
Solo Rvers Club
Join Date: Oct 2010
Location: Lancaster, California
Posts: 444
Grey tank Maintenance

So...I live in the Bounder, at my job. I need to drain the black tank about every 3-4 wks. No problem.

The grey tank, I have one of those 'garden hose' fittings on the end of the drain valve, and I leave the valve always open and let the grey water run out into the buildings sewer drain.

I have done so for over a year. I go dry-camping about every 3 months. The grey tank gets a pretty good splash cleaning while I drive with it partially full.

Question is....is that enough to keep it clean??? I don't want soap scum to build up in it and cause troubles.

The electronic level sensors all work, 1/4, 1/2, 3/4, full...so no problems there.

'94 Bounder 32h. Chevy V-8 44k miles and like new. Tow 4 down '85 Nissan 4x4 Kingcab
Retire in 1yr. 3mo. , but who's counting
mr300ce is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free!

iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!

You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!

Old 11-29-2011, 12:00 AM   #2
Senior Member
danes-on-tour's Avatar

Monaco Owners Club
Texas Boomers Club
Join Date: Feb 2008
Location: Denmark and US
Posts: 1,965
If you can get to the outside of your grey tank somewhere along the top part, you could fit a tank rinser. This way you could give the tank a good spraying.

Is it enough what you are doing now? Well, I suppose there is no way of knowing for sure but the fact that your tank sensors are working properly is a good sign I would have thought.

The Great Dane
2007 Monaco Diplomat PAQ - 2007 Saturn Vue Honorary Texas Boomer
Living in Denmark - visiting the US whenever possible. www.winnebago.dk www.blog.retired.dk

danes-on-tour is offline   Reply With Quote
Old 11-29-2011, 02:50 AM   #3
Senior Member
Dr4Film's Avatar

Monaco Owners Club
Join Date: Oct 2009
Location: Varies Depending on The Weather
Posts: 7,545
I never recommend leaving any tank valve open. The one and only time the gray tank valve should be left open temporarily is when using the Spendide clothes washer and that is to prevent a gray tank overflow. When done I always keep my valves closed. When the tanks are full or almost full, I empty the black first followed by the gray. They both get a good cleaning using the "Whoosh" factor.

Some locations, like when I am located at my brothers barn where there isn't any hookups except for electric. I will use a small hose to drain the gray water into a dry well but the bottom of the tank will never get really clean when doing that. So once I leave, I always have the gray tank full then stop at the nearest dump station to dump the black and the gray tanks allowing them to "Whoosh" themselves clean.

Only my opinion.

Dr4Film ----- Richard
2002 Monaco Windsor PBT 40Ft. (R HOME) - 30Ft. 2006 Pace Trailer (R JUNK). Trailer Has 06 VUE (R TOWD) 04 Victory Alen Ness Edition (R RYDE). Full-Timer for 14 Yr's BUT now a Part-Timer. Cummins ISC-350 With Banks Power Pack and Upgraded PRXB PacBrake.
Winter Home in Flagler Beach FL - Now Staying in Dansville NY for the Summer.
Dr4Film is online now   Reply With Quote
Old 11-29-2011, 08:10 AM   #4
Senior Member
Luckiest Dreamer's Avatar
Winnebago Owners Club
Join Date: Jun 2010
Location: Iowa
Posts: 1,178
I had to deal with his problem several times when I was a boater. The gray water was pumped overboard after first settling in a sump. The sump had a cover that could be removed for cleaning and was not sealed as well as a tank would be. You could not imagine the crud that accumulated, and the smell after not cleaning after awhile. I believe skin cells will decompose and offer an odor as bad as most can imagine. Since you cannot get inside a tank to clean it will probably require a chemical. Household bleach is what we use to disinfect our fresh water tank, so I suggest it will also help with the gray water tank, and a good flushing with a hose. Someones idea to add ice cubes to the tank and take it for a ride makes some sense as well. I have never tried it.
Larry B, Luckiest Dreamer
Luckiest Dreamer is offline   Reply With Quote
Old 11-29-2011, 08:39 AM   #5
Senior Member
mr300ce's Avatar
Fleetwood Owners Club
Solo Rvers Club
Join Date: Oct 2010
Location: Lancaster, California
Posts: 444
Ok...so it is making since to leave valve closed for a few days, and showers, then open it and let it drain. Probably leaving it open will allow the bottom to dry out alot, and leave residue to build up, like shower and sink soap scum.

I use 'dial' bar soap once a day. To help keep the tank clean, and the garden hose from clogging, I have a strainer in the shower drain, and clean it out after each shower.

I never knew I 'shed' so much hair.

Can't get ICE down into the grey tank. There is a built-in spray cleaner on the black tank, that I use every time I drain it.

I am liking the bleach idea. I can ad some in all the drains before I drive away after sitting here for a few months. That way it will clean/sanitize the drains, traps, and pipes on its way to the grey tank. It will then 'slosh; around in the tank until I dump at the campground/rv park.

But will bleach (clorine) actually clean/disolve scum ????
'94 Bounder 32h. Chevy V-8 44k miles and like new. Tow 4 down '85 Nissan 4x4 Kingcab
Retire in 1yr. 3mo. , but who's counting
mr300ce is offline   Reply With Quote
Old 11-29-2011, 09:38 AM   #6
Join Date: Sep 2011
Location: Melissa, TX
Posts: 55
Can you get a batch of soap like dawn or something that dissolves grease in there with 1/3 a tank of water ( to allow for suds) or use an automatic dishwasher soap that does not generate as many suds. Put that in before you drive around to slosh it good and drain it out. that should get it cleaner than bleach would. after the soap bleach might help more than it would before the soap.

I have never done this. I'm just extrapolating from cleaning other stuff. It seems to me that the same principles apply.

2005 Winnie Adventurer 37B ,
DrScott is offline   Reply With Quote

maintenance, tank

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
The Geo Method / Black and Gray Water Holding Tank Maintenance Geometricenigma Technology: Internet, TV, Satellite, Cell Phones, etc. 33 10-29-2011 10:34 AM
Water tank maintenance stegosaurus Monaco Owner's Forum 13 07-04-2010 09:32 AM
Grey Tank Crack Repair Amy & Charlie National RV Owner's Forum 5 07-31-2008 04:30 PM
2001 35u grey water tank access Jim Winnebago Industries Owner's Forum 3 06-04-2008 09:14 AM
Extra grey tank capacity when Boondocking PeteB Winnebago Industries Owner's Forum 2 05-14-2008 02:32 AM

» Virginia Campgrounds

Reviews provided by

Our Communities

Our communities encompass many different hobbies and interests, but each one is built on friendly, intelligent membership.

» More about our Communities

Automotive Communities

Our Automotive communities encompass many different makes and models. From U.S. domestics to European Saloons.

» More about our Automotive Communities

Marine Communities

Our Marine websites focus on Cruising and Sailing Vessels, including forums and the largest cruising Wiki project on the web today.

» More about our Marine Communities

Copyright 2002-2015 Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 07:12 PM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2016, vBulletin Solutions, Inc.