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Old 11-07-2013, 07:42 PM   #1
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Location: Peoria, Arizona
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these may be the dumbest questions ever but I gotta ask 'em anyway. If the low point drains were opened for over 100 miles prior to winter setting in, why do you need to put antifreeze in the lines? If you blow the lines clear of water with air, why would you need antifreeze? and lastly, if the temp in not going to be much below say 25, and you have blown the lines clear with air, do you still need antifreeze? I'm just askin...

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Old 11-07-2013, 08:14 PM   #2
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Looking at your location you may be ok. I was in Gold Canyon and had my outside line freeze a couple times last year. You have a lot of money invested in a rig and if it breaks it could be a pain to get to and why take a chance it's a very simple easy job to do. Most of the time rv antifreeze can be bought for $3 a gal and 2 gal will do most trailers. Personally for me it would be peace of mind .if you blow the lines clear your probably ok I have done that here in Michigan and only put antifreeze in the traps

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Old 11-07-2013, 08:14 PM   #3
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Lots of posts on this topic. Most folks seem to go with the extra insurance of doing the antifreeze in addition to blowing the lines out, since it's only a $3 investment. Your logic is correct, however, if there's no water in the lines, antifreeze is just backup. There may be some validity to keeping the traps moist with antifreeze too.
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Old 11-07-2013, 10:13 PM   #4
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There could be a low spot in a line and just blowing the line out may not always be enough. Just personal experience talking here. I also feel more comfortable knowing that the pump has some protection as well.
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Old 11-08-2013, 06:18 AM   #5
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For the fresh water lines, and you present a good argument as to why bother with putting in the "pink stuff" if you blow out the lines with compressed air. But what if your RV refrigerator has an icemaker? You're not going blow it out with compressed air. That has to be done with RV antifreeze and the test to confirm you've performed the procedure correctly is to make some "pink" ice cubes.

However, you're only looking at half the total picture. The waste water system needs to be winterized too. Your traps need protected, along with your holding tanks and shut-off valves. Yeah, you could blow most, if not all, the water out of the traps using compressed air, but with no water in the traps, you're permitting odors from the holding tank to get into the living areas. It could get stinky inside by the time spring comes around again. I always run some extra RV antifreeze down into the black tank when I winterize the toilet's fresh water line and, after I'm finished winterizing all the fresh water lines, pour some RV antifreeze down every drain.
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Old 11-08-2013, 03:50 PM   #6
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Ok, you all convinced me. Also, the trailer is now sitting on our new lot in Pacitas, NM and it is already freezing at night there. I will winterize when we get there next week and hope it isn't too late. Thanks for the advice all.

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