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12-04-2013, 07:43 PM
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#1
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Senior Member
Join Date: Apr 2012
Location: South Carolina
Posts: 1,441
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RV Antifreeze Into Fresh Water Tank
Some use a pump to push antifreeze through the fresh water system, but some of us just put it into the fresh water tank and let the coach's pump do the work. A problem doing this with our Sunseeker is that the tank fill is high and trying to hold a funnel and the antifreeze over your head is asking for trouble. A 2 liter soft drink bottle is a perfect fit for the tank fill. I use a funnel from the kitchen to fill the bottle from the antifreeze jugs. I don't want anything from a funnel from my shop to be washed into the tank.
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12-04-2013, 07:58 PM
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#2
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Site Team - Lou
Join Date: Oct 2009
Location: South Eastern PA
Posts: 23,268
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It seems to take almost forever to get the taste out of the pipes without using the tank. Has to take (really) forever to get it out using the tank.
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Lou & Freya the wonder dog
2008 GMC Sierra 3000HD Allison Duramax
2019 Flagstaff 8529FL
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12-04-2013, 08:05 PM
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#3
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Site Team
Join Date: Jan 2007
Location: Goodyear, Arizona
Posts: 33,602
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why would you need to put antifreeze in the FW tank?
nearly all RV forums i frequent, advise against doing that, since a drained FW tank has plenty of room for what little water is left, to freeze and expand.
many also comment about the taste and swear that they'll never do it again, because it took so much water to flush the taste out.
that's why antifreeze kits attach at the water pump, so that none of the antifreeze gets in the FW tank.
same goes for the water heater. drain that sucker and bypass it, no AF needed.
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Dan-Retired California Firefighter/EMT
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and Zoe the Wonder Dog(R.I.P.)
2016 PrimeTime TracerAIR 255, pushing a 2014 Ford F150 SCREW XTR 4x4 3.5 Ecoboost w/Max Tow Package
4pt Equal-i-zer WDH and 1828lbs of payload capacity
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12-04-2013, 08:12 PM
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#4
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Senior Member
Join Date: Sep 2013
Location: Idaho
Posts: 9,839
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I would never put A/F in my fresh water tank.
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2016 F350 6.7L LB CC Reese 28K 2014 Chaparral Lite 266sab
"Those who would give up essential Liberty, to purchase a little temporary Safety, deserve neither Liberty nor Safety." 2014 19 days camping 2015 17 days camping201620 days camping
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12-04-2013, 08:18 PM
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#5
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Mod free 5er
Join Date: Mar 2008
Location: Concord, NC
Posts: 24,702
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Quote:
Originally Posted by bikendan
why would you need to put antifreeze in the FW tank?
nearly all RV forums i frequent, advise against doing that, since a drained FW tank has plenty of room for what little water is left, to freeze and expand.
many also comment about the taste and swear that they'll never do it again, because it took so much water to flush the taste out.
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He is using the tank to hold the antifreeze and then the pump to circulate the antifreeze thru the lines, not to keep the fw tank from freezing. Evidently doesn't use the pump to directly suck the antifreeze from the jug thru the lines.
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12-04-2013, 08:21 PM
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#6
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Professional Curmudgeon
Join Date: Sep 2013
Posts: 754
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Regardless of your choice to run AF through the FW tank or not, using a 2 liter bottle to fill with is using your noggin' and may help out somebody else that chooses to treat their FW tank as well.
Good on ya!
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2022 Cougar Half Ton 24RDS fifth wheel
2014 Coachmen Catalina 253RKS (sold)
2017 F350 6.7L DRW CC LB 4x4 Lariat
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12-04-2013, 08:57 PM
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#7
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Senior Member
Join Date: Nov 2013
Location: Seaford, De
Posts: 2,377
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no sense in treating something you can drain just as quickly. Probably takes way more antifreeze this way too as I'm sure it doesn't draw from the very bottom of tank. I can winterize my 30ft Wildwood that has an outside kitchen also with only 4 gallons, and that's using 1 to dump down all the drains to fill P traps.
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David & Lynn 2014 Coachmen Chaparral Signature 327 RLKS 2016 Ford F350 Lariat CC Dually
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12-04-2013, 09:11 PM
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#8
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Senior Member
Join Date: Jul 2010
Posts: 2,031
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I had a trailer that the water lines were clamped onto the pump and fresh water tank. The water lines could not be removed. The only way to put AF into the system was putting it into the FW tank.
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Terry and Janet
2008 3001W Windjammer
2007 Ford F150
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12-04-2013, 09:33 PM
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#9
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Senior Member
Join Date: Nov 2011
Location: Vancouver Island
Posts: 267
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I always add the RV anti freeze in the fresh water tank and pump it through.
When I de-winterize, I drain, flush with about 10 gallons of water, add 5 gallons of vinegar, flush and drain, add about 10 gallons of water and three boxes of Baking Soda ( not powder), flush, drain and fill with water.
Never had issues with freezing or with taste or odour.
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Never enough camping!!
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12-04-2013, 09:44 PM
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#10
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Senior Member
Join Date: Apr 2012
Location: South Carolina
Posts: 1,441
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Quote:
Originally Posted by herk7769
It seems to take almost forever to get the taste out of the pipes without using the tank. Has to take (really) forever to get it out using the tank.
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Taste in the water? Why would you drink it?
Seriously, I haven't had a problem. When I dewinterize it, I dump the antifreeze out of the water filter cannister, run water into the fresh water tank with the drain open, let it drain completely, and repeat a time or two, then run the pump to flush the plumbing. Trying to flush the system with the canister still full of antifreeze could be a problem. Incoming water would have to slowly dilute what's in the canister rather than push it out the way it does in the tubing.
By the way, when I winterized today I used 3 gallons of antifreeze, including what I dumped in the traps and the black water tank. I'm generous with it. I run the faucets a long time and check the color to be sure it's nice and pink. The cost of one extra gallon is worthwhile to eliminate any chance of having something freeze. Of course, the coach has to be level so the antifreeze goes to the pump's pickup. If it was leaning the wrong way it would take a lot more antifreeze.
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12-04-2013, 11:34 PM
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#11
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Senior Member
Join Date: Dec 2012
Location: Franklin County, MO
Posts: 2,652
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Make sure you get your anti-freeze completely flushed out of the system next spring BEFORE you "un-by-pass" (is that a word?) and fill the water heater. If you get antifreeze in the water heater and get it hot, it takes forever to get rid of that odor/taste. We had that problem on our boat once. If I recall, it took about a gallon of bleach run through the hot water heater to get the odor/foul taste out.
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Mike and Yvonne
and Sophie, the little white dog
2017 Columbus 320RSC
2021 Chevy Silverado 3500HD DRW 4X4 Duramax
“It's not how old you are, it's how you are old.” ― Jules Renard
"It's not the years...it's the mileage." - Indiana Jones
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12-05-2013, 01:40 AM
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#12
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Engineer of Crazy Train
Join Date: Sep 2012
Location: Tiverton, RI
Posts: 1,585
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Quote:
Originally Posted by RamblerGuy
Taste in the water? Why would you drink it?
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I don't think he means drinking the antifreeze, just the water in the system tastes bad due to the antifreeze. Lots of flushing to get the taste out.
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TV - 2015 Ram Truck EcoDiesel
TV - 2006 Jeep Liberty Turbo Diesel (Retired to Daily Driver)
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Come read my Camping Blogs
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12-05-2013, 03:45 AM
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#13
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Just a member
Join Date: Jul 2011
Location: Great White North
Posts: 921
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Quote:
Originally Posted by RamblerGuy
Some use a pump to push antifreeze through the fresh water system, but some of us just put it into the fresh water tank and let the coach's pump do the work. A problem doing this with our Sunseeker is that the tank fill is high and trying to hold a funnel and the antifreeze over your head is asking for trouble. A 2 liter soft drink bottle is a perfect fit for the tank fill. I use a funnel from the kitchen to fill the bottle from the antifreeze jugs. I don't want anything from a funnel from my shop to be washed into the tank.
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Are there no provisions to blow out the lines in the Sunseeker? That would remedy the grief associated with getting antifreeze into the FW tank and save some bucks on antifreeze.
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K&L + the Wild Bunch
TT: 2011 Rockwood 8293RKSS
TV: 2019 Dodge 3500 SRW Crew HO CTD
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12-05-2013, 06:54 AM
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#14
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Senior Member
Join Date: Nov 2013
Location: Seaford, De
Posts: 2,377
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Quote:
Originally Posted by kandl
Are there no provisions to blow out the lines in the Sunseeker? That would remedy the grief associated with getting antifreeze into the FW tank and save some bucks on antifreeze.
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I made a brass fitting for several dollars (better than plastic junk at RV dealers). Turn down regulator on air compressor to about 30psi, hook to city water hookup. Open each faucet and flush toilet to remove all water. Remove air, drain low point drains to get last little bit out. System is now empty and can be filled with antifreeze without diluting it. All can be done in under half hour for under $20
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David & Lynn 2014 Coachmen Chaparral Signature 327 RLKS 2016 Ford F350 Lariat CC Dually
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12-05-2013, 07:46 AM
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#15
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Member
Join Date: Feb 2012
Posts: 163
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Quote:
Originally Posted by davel1971
I made a brass fitting for several dollars (better than plastic junk at RV dealers). Turn down regulator on air compressor to about 30psi, hook to city water hookup. Open each faucet and flush toilet to remove all water. Remove air, drain low point drains to get last little bit out. System is now empty and can be filled with antifreeze without diluting it. All can be done in under half hour for under $20
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2x. Best way to do it.
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Jim and Carol
2012 Crusader 290RLT
2010 Ford F-250 King Cab Diesel
Harley Davidson Edition
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12-05-2013, 07:56 AM
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#16
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Senior Member
Join Date: Aug 2012
Location: Oshawa, ON
Posts: 979
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Quote:
Originally Posted by Ford Idaho
I would never put A/F in my fresh water tank.
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X2.......however, to each their own.
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Dave, Southern,ON
2017 GMC SLT HD All Terrain Crew Cab (6' 6" Box) 2012 Roo 23SS
E2 Trunnion WDH (1,000 lb / 10,000 lb)
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12-05-2013, 07:57 AM
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#17
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Senior Member
Join Date: Aug 2013
Location: Ohio
Posts: 110
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Why does everyone keep talking about dumping a gallon of pink stuff into the traps? don't you get plenty in there when you turn on the faccuet and let it run for a few seconds while it chugs out the air? I also put AF in FW tank and pull it in. Never noticed a bad taste after flushing. But we don't really drink the water at the CG anyway. We always take bottled water for drinking.
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2012 F150 4x4 5.0
2011 Cherokee Grey Wolf 26bh
God Bless America
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12-05-2013, 08:08 AM
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#18
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Senior Member
Join Date: Jul 2013
Posts: 116
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My sunseeker (3050s) didn't have enough room to put a bypass valve before the water pump. My old RV did which allowed you to suck the AF right from the bottle. I would prefer doing that, but putting it in the fresh water tank was the only way. I'll see in the spring how much of a pain it it to flush it out.
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12-05-2013, 08:11 AM
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#19
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Senior Member
Join Date: Sep 2013
Location: Idaho
Posts: 9,839
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Quote:
Originally Posted by Dave Lyon
X2.......however, to each their own.
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I agree 100%, but I bought an inline filter to use before the F/W tank to keep unwanted gunk out.
I'll be hanged before I put something in there like A/F on purpose.
I would just blow the system with air and forget the A/F.
__________________
2016 F350 6.7L LB CC Reese 28K 2014 Chaparral Lite 266sab
"Those who would give up essential Liberty, to purchase a little temporary Safety, deserve neither Liberty nor Safety." 2014 19 days camping 2015 17 days camping201620 days camping
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12-05-2013, 09:28 AM
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#20
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Senior Member
Join Date: Sep 2010
Posts: 2,219
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Quote:
Originally Posted by johnlantz
My sunseeker (3050s) didn't have enough room to put a bypass valve before the water pump. My old RV did which allowed you to suck the AF right from the bottle. I would prefer doing that, but putting it in the fresh water tank was the only way. I'll see in the spring how much of a pain it it to flush it out.
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No worries. It will come out of out the tank just like it comes out of the lines.
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2011 Flagstaff 831FKBSS
2010 F250 4X4 5.4L 3.73 LS
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