wa8yxm
Wherever I happen to park
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Joined: 07/04/2006
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Actually 3 answers
WET is better,keeps seals from drying out
if it's winter in Nebraska (or Michigan) make the "Water" the Pink stuff (RV Antifreeze) (Heck if it's northern Texas make it pink stuff)
If there is no danger of freezing,, Water is fine
This is one of the times I add odorlos to the tank (A "Chemical") as the biological agents have time to work on the "Stuff" clinging to the sides of the tank when it's parked for months at a time
Nothin adds excitment like something that is none of your business
John is Near Kenwood TS-2000 housed in a 2005 Damon Intruder 377
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Chuck&Gail
In the Colorado Mountains
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Joined: 06/16/2004
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We keep a few gallons of water in ours. In winter it is antifreeze. Never had any trouble in 70,000 miles.
Note adding a cup of peanut oil during storage keeps seals nice.
Chuck
Wonderful Wife
Lovely German Shepherd.
1999 Mercedes ML320 TV
2003 Wanderer 187TB Toybox (3620# UVW, 4800# loaded)
Not yet camped in Hawaii, 2 Canada Provinces, & 2 Territories.
I can't be lost because I don't care where this lovely road is going
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tomlang
Los Angeles area
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Joined: 06/11/2007
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I am in Southern California, so I am more concerned with summer heat than with winter freezing, and I like to keep the motorhome ready in case of earthquake.
I like to keep the fresh water tank half or more full, and add some bleach if it is going to sit unused for long. This is my emergency earthquake water supply (along with a case of bottled water). The Everpure filter will take care of the chlorine taste in the drinking water.
I like to empty the gray tank and leave it that way. There should be nothing in there to cause trouble if it dries out completely. I do periodically add some water to the drains to keep the water traps filled.
I like to flush and empty the black tank, then refill with about 4 gallons of water (and chemical if it will sit for long). There is the possibility of some remaining solids turning to concrete if allowed to completely dry out, so I like to keep this tank wet. The reason for 4 gallons is that you want to use lots of water in this tank to make future emptying easy.
Tom and Lynne
Tom is an Electronics Engineer, Lynne a retired teacher.
old rig is a 1988 Winnebago Superchief, just back from being on tour with the Blue Turtle Seduction (band)
new (our dream rig) is a 2003 Foretravel 38' U295
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NGRRFan
Colo. Spgs., CO
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Joined: 07/25/2002
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pmooney1 wrote:I would think that you would have to go a long time between trips for the gallon or two of water that is kept in the black tank to evaporate. {snip} If my kids can have a frisbee left in the back yard with a little rain water left in it for a few weeks, I don't think the couple gallons in the tank will evaporate through the vent during the few weeks between trips. You don't live in Colorado where the humidity is low. A frisbee left in the yard with water in it will be empty and dry in a day or two. Our average humidity level is less than 20% during the summer months. So water will evaporate from the tank via the vent pipe.
Rich,and Tobi (the rescued dog)
Prowler 5ver, 84 Ford F250
KCOCOLOR78 Weather
Colo. Spgs. CO
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pmooney1
massachusetts
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Joined: 03/12/2007
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NGRRFan wrote:pmooney1 wrote:I would think that you would have to go a long time between trips for the gallon or two of water that is kept in the black tank to evaporate. {snip} If my kids can have a frisbee left in the back yard with a little rain water left in it for a few weeks, I don't think the couple gallons in the tank will evaporate through the vent during the few weeks between trips. You don't live in Colorado where the humidity is low. A frisbee left in the yard with water in it will be empty and dry in a day or two. Our average humidity level is less than 20% during the summer months. So water will evaporate from the tank via the vent pipe.
I will add this to my list of places to move to when I retire. I hate the humidity.
2001 GMC Yukon 4x4 SLT
2007 Kodiak 30BHSL
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Dixonmatco
Santa Rosa, California
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Joined: 04/29/2006
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I empty my grey tank, and recharge my Black tank with 2 gal water and a chemical pack. (I use the green ones) Sometimes I add a cup or two of calgon water softener.
FW tank keep full if stored for long periods. Otherwise I drain and refill before each trip. (long trips I only add a few gallons for breaks along the way)
Frozen tanks not a problem where we live.
2000 Chevy Silverado 1500
2005 Komfort Trailblazer T23S
Honda EU2000I
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ramblinwreck
Albuquerque, NM
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Joined: 10/13/2006
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Thought I was using common terminology, maybe I'm not. My manual refers to three tanks: Holding, Grey, and Fresh Water. My question was with respect to the black tank but in reality, it could just as easily apply to the others. I was concerned about solidification inside the black tank when I posted the original post.
Thanks.
2006 Islander 40G
08 Chevrolet Trailblazer
Two Children (Eric (18) and Alyssa (14))
Two Golden Retrievers (KP and Shadow)
One cat (Jack)
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gixxergreg
Marshall, MI
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Joined: 06/28/2007
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Empty the blank tank, and then I place about 2-3 gallons of good water along with a deoderant in it for extended periods
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Rubiranch
Salt Lake City, UT
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Joined: 03/09/2004
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1995brave wrote:You will get two answers to this question
What makes you think that?
 
TV: Mint 1972 Ford F-250 XLT
TT: 1969 19' Excel; entertains 6, feeds 4, sleeps 2
You don't shoot to kill, you shoot to stay alive.
I don't carry because I have to, I carry because I get to.
I like new things-
- when they're 40 years old!
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Rubiranch
Salt Lake City, UT
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Joined: 03/09/2004
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Chuck&Gail wrote: Never had any trouble in 70,000 miles.
You know, that might only be one year of experience.
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