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Old 10-16-2016, 07:37 AM   #1
Join Date: Apr 2014
Location: nude jersey
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Winterizing.4 gallons enough?

On my 4Winds 31F I put in 4 gallons of anti freeze,pump runs but nothing came out the faucets.First time winterizing and the pump runs.Thanks
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Old 10-16-2016, 07:48 AM   #2
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Originally Posted by mikhett View Post
On my 4Winds 31F I put in 4 gallons of anti freeze,pump runs but nothing came out the faucets.First time winterizing and the pump runs.Thanks
Winterizing in this manner requires you to put more antifreeze in your fresh water tank than the amount normally unusable in your tank. It all depends on the location of the water pickup in the tank.

Many, if not most coaches have a separate pick up tube on the inlet side of the water pump.

The procedure is generally to shut off a valve coming from the fresh water tank, open a valve going to the pick up tube, insert the tube into your gallon of RV antifreeze, run each faucet until "pink" comes out, shut off faucet.

After you do all the faucets, don't forget to pour a little antifreeze into the sink traps, the shower, and the trap in the washing machine (if equipped). Also it helps to use the installed valves to bypass the hot water heater, and then drain the hot water tank, thereby eliminating the need to completely fill the hot water tank with 6 to 10 gallons of antifreeze before it will come out of the hot water spigots.

Many people (myself included) blow out all the lines instead of filling them up with antifreeze, then pour antifreeze in the traps as mentioned above. It takes a LOT less antifreeze, and makes putting the water system back into service a lot easier in the Spring!

If you haven't already, you need to dig into your coach owners manuals for tips on winterizing the water system. If you don't have the manuals post here, and you will probably be provided with links, or the actual manuals in .pdf format!

A last tip, if your RV does not have the antifreeze pickup tube, you can generally install the valves and tubing necessary for under $30.00.

Good luck!
Scot & Laura Kellersberger
Newmar 4 wheel drive Dutch Star 3891, 2019 F-150 Toad. U.S.Army (ret)
1985 - 2006
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Old 10-16-2016, 08:33 AM   #3
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Make sure your hot water tank is bypassed.
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Old 10-16-2016, 03:22 PM   #4
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From the 2010 Four Winds owner's manual:

Class C Water System Winterization
1. Level the unit for good system drainage.
2. Drain the waste water tanks (black then grey following drainage guidelines).
3. Turn the water pump switch off.
4. Open all faucets, and water heater drain.
5. Open low point drains on the water lines (pull up and twist valve) and the outside shower to let
water drain.
6. Drain the fresh water tank using outside spigot type drains.
7. When all lines are drained, close water tank valve, all faucets, water heater drain, and low
point drains on water lines.
8. Turn water heater bypass valve on to prevent tank from filling with antifreeze.
9. Remove water filter (if installed) and replace with bypass cap to protect filter.
10. Remove water pump line at fresh water tank location and attach siphon hose to fitting.
11. Turn on water pump and let each faucet run until antifreeze flows freely from both hot and cold
lines. Also run the shower and toilet until antifreeze is visible.
12. Turn off water pump.
13. Pour one cup of antifreeze in every drain to protect the P-traps.
Before using the system again in warmer weather, completely flush the system with water, flush the toilet, and
sanitize the entire fresh water system. When using the motor home during cold weather and water in a tank or
drain line should happen to freeze, you should take immediate steps to thaw it before damage to the system
occurs. DO NOT continue to use water system components if such a condition exists. If damage has occurred,
make sure to have it repaired before using again.
As "Harvard" said, if you do not perform step 8), above (which is to bypass the water heater), you'll end up filling the water heater with around 6 gallon of antifreeze- a big waste.
2008 Holiday Rambler Admiral 30PDD (Ford F-53 chassis)
2009 Honda Fit Sport
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Old 10-19-2016, 11:51 AM   #5
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If you did fail to do step #8 (and that is my guess) you can capture at least a few of the 6 gals that went directly into the tank if you drain the tank into a large clean tub of some kind, put it all back in the bottles and try it all again.
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Old 10-20-2016, 07:30 PM   #6
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Depends on the size of the coach, ours uses less than 2 gallons. We use the water heater by-pass, and don't put the pink stuff in the water heater.
Dear Wife and Me, in our
2020 Coach House Platinum 271XL FR
5 fur babies
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Old 11-03-2016, 09:37 AM   #7
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we did the same for 10 yrs..filled dam near everything,, then drained in spring and tasted that crap all summer, the last 2 RVs i got smarter and by passed the hot water tank and removed the fill hose from pump to tank. made a short hose to suck out of a RV antifreeze jug and can winterize with 2 gallons now.
1992 Itasca 34RQ Suncruiser Diesal 34 ft
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Old 11-03-2016, 09:46 AM   #8
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Location: Kamloops, BC. Canada
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Winterized our coach and it took 15 gallons.
We have the Aquahot system and the washer/dryer.
It is strongly advised against blowing out the lines with
the Aquahot as it does not take much moisture to ruin a
10K dollar unit.
Better safe than sorry.

Always make sure you winterize the outside shower.
Also your drain valves.
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Old 11-03-2016, 11:10 AM   #9
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Originally Posted by luckyd View Post
Always make sure you winterize the outside shower.
Also your drain valves.
Very easy to forget.

It isn't difficult to add the water tank bi-pass and a winterizing valve on the suction side of the water pump if you don't already have them, depending on how difficult it is to get to them. They will reduce the amount of anti-freeze required dramatically.

With the water heater bi-pass installed, don't forget to drain the water heater tank.

Best of luck.

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Old 11-03-2016, 12:28 PM   #10
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If you have a whole-house filter, be sure to remove the cartridge. If you don't, the filter will remove the pink color. Don't ask how I know this...
2005 Monaco Diplomat 40PDQ
Hartwell, GA
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