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07-28-2014, 10:14 PM
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#1
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Senior Member
Join Date: Mar 2014
Posts: 190
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RV antifreeze
Hello folks. I seen online while your coach is being used along with heat that you can put RV antifreeze in your holding tanks and that should help in cold-weather and keep your tanks from freezing true or false? Thanks
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07-28-2014, 10:37 PM
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#2
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Senior Member
National RV Owners Club Ford Super Duty Owner
Join Date: Sep 2010
Location: Horse Town USA, CA.
Posts: 3,784
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Quote:
Originally Posted by Cola ny
Hello folks. I seen online while your coach is being used along with heat that you can put RV antifreeze in your holding tanks and that should help in cold-weather and keep your tanks from freezing true or false? Thanks
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Never heard that before.
If your going to be using the tanks at same time your going to need a lot. RV antifreeze actually will freeze, not sure at what temperature. RV antifreeze will not expand like water and break thing's.
Chuck
__________________
1999 35 ft. Dolphin 5350, F53, Banks System, 5 Stars Tune, Air Lift Air Bags, Koni Shocks, Blue OX TruCenter, TigerTrak track bars F&R, Roadmaster 1-3/4" rear auxiliary sway bar, 2004 F450 Lariat Pickup 6.0 Diesel Crew Cab DRW, 4X4, GVWR 15,000, Front GAWR 6,000, Rear GAWR 11,000, GCWR 26,000,1994 36ft Avion 5er, GVWR 13,700, 2,740 Pin Weight.
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07-30-2014, 12:16 AM
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#3
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Senior Member
Join Date: Jul 2012
Posts: 1,450
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When winterizing an RV, you can put some RV antifreeze in your empty holding tanks. If tanks are being used, that is a different story.
The antifreeze solution would become very diluted as the tank fills. This would render the antifreeze practically useless. You would risk a broken holding tank. A heat source is necessary in the tank bay.
__________________
George R. - Fulltiming since January '03
2007 Newmar Mountain Aire 3991
2012 Chevy Malibu LT1
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07-31-2014, 08:14 AM
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#4
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Senior Member
Join Date: Nov 2005
Posts: 3,968
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RV or marine antifreeze does freeze to a point. It will get solid at about -50*F in full concentration. It will turn to slush at about 10*F in full concentration.
The advantage of RV antifreeze is not that it doesn't eventually freeze, but that it doesn't expand when it freezes. It's used in full concentration to displace the water in lines, pumps, faucets, drains, other related plumbing hardware. Since it doesn't expand when it freezes it will not crack pipes, or destroy pump mechanisms.
If it's used in less than full concentration the freezing point is raised. In addition it will not keep the water molecules from freezing. The water will expand when it freezes, and if the water is in large enough concentration it will damage pumps and related plumbing hardware.
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Hikerdogs
2013 Adventurer 32H
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07-31-2014, 08:36 AM
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#5
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Senior Member
Appalachian Campers
Join Date: Sep 2002
Location: Dixie !! (north Georgia) USA
Posts: 4,114
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Where did the OP see this?
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07-31-2014, 11:02 AM
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#6
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Moderator Emeritus
Join Date: Jan 2000
Location: West Palm Beach, FL. USA
Posts: 27,704
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You can use RV antifreeze in your waste tanks while using the coach in cold weather, but you need to add or replenish to keep the concentration sufficient for the weather. Usually not a big deal if the coach is being heated - just need enough to keep the drain valves from freezing and breaking.
The fresh tank is a bit different, since you probably don't want to drink water with RV antifreeze in it, even though its not poisonous. But if you are only flushing toilets, doing dishes and washing hands, it's probably ok. Carry drinking water separately and keep it in the living area.
__________________
Gary Brinck
Former owner of 2004 American Tradition and several other RVs
Home is West Palm Beach, FL
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08-04-2014, 02:35 PM
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#7
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Senior Member
Join Date: Sep 2005
Location: HOME: Oshkosh, WI
Posts: 2,102
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We often leave Wisconsin in the middle of winter with our coach winterized .... we carry bottled water to drink for the first few days until we get to warm enough climes to dewinterize.
We purchase two or three gallons of purple (-30 freezing) windshield washer fluid ... we keep the bottles in the bottom of the shower ... we use this to flush the toilets until it is warm enough to dewinterize.
Works for us ... it is cheaper and does not leave the residue that RV antifreeze leaves behind.
__________________
2012 Buick Enclave
Present At home Home: Oshkosh, WI
former owner 2004 Winnebago Journey 39W
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