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Old 11-22-2005, 12:22 PM   #1
a87supra
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Default STi Water Tank - Freezing?

Ok, this may be the dumbest question ever, but when parking outside, do I need to worry about the water in my I/C sprayer tank/lines freezing? If so, what do I need to do to keep it from freezing?

I feel like an idiot... Thanks for any help
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Old 11-22-2005, 12:28 PM   #2
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AFAIK it just says not to fill it too much so in case it freezes it wont expand and break the container.
I think it mentions something about it in the manual.
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Old 11-22-2005, 12:31 PM   #3
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I like to empty mine as much as possible. This keeps it from having any chance of expanding and busting the container. Also, DO NOT spray it while frozen. I heard you can break the pump easily that way.
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Old 11-22-2005, 12:34 PM   #4
a87supra
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Quote:
Originally Posted by MaSTi
I like to empty mine as much as possible. This keeps it from having any chance of expanding and busting the container. Also, DO NOT spray it while frozen. I heard you can break the pump easily that way.
... Next dumb question, where do the water lines run, and is there any type of anti-freezing, or just don't overfill it and don't use it when it's too cold?
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Old 11-22-2005, 12:45 PM   #5
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i had mine around 1/2 full all last winter and never had any issues
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Old 11-22-2005, 12:49 PM   #6
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If it gets below 0C, it will freeze.
If you plan on using it below 0C, add antifreeze.

Personally, if its so cold that I have to worry about freezing I don't feel the need for the water spray, so I just leave it empty.
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Old 11-22-2005, 12:49 PM   #7
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Pop open your trunk and hood, and look for the clear plastic lines. (Well, they're opaque actually). You'll spot them going from the water tank in the trunk, if you look up at the bottom of your rear deck. Likewise, you'll see the lines on your hood, near the opening by the hoodscoop.

Basically, simply make sure your water tank is not completely full (about 3/4 full or less is fine), and don't use the spray for a week or so before winter hits and it gets below freezing. The water in the lines will dry up enough that the lines won't be damaged.

The only thing you might notice is a clunk from the trunk area, if a block of ice forms in the water tank and it moves around. I never really noticed this last year, and had a bit over half a tank of water left come winter. (I had ice in the tank, but it didn't move around much).

Come spring, you'll just need to give the water spray button a few pushes to repressureize the system.

Anti-freeze could be put in the tank, but all it's going to do is wind up on your intercooler eventually, and be smelly. Plus, you risk staining things. I can't think of a good reason to tempt fate and put anything but water in there.

KR
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Old 11-22-2005, 12:51 PM   #8
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Quote:
Originally Posted by a87supra
... Next dumb question, where do the water lines run, and is there any type of anti-freezing, or just don't overfill it and don't use it when it's too cold?
The lines run from the trunk to the inside of your hoodscoop. Don't use it when it's extremely cold out and keep the tank about 1/2 full for the cold season.
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Old 11-22-2005, 12:51 PM   #9
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add some alcohol to the mix, or anti freeze. unless its like 40 below you wont have to worry about it freezing.
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Old 11-22-2005, 12:51 PM   #10
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IIRC the line runs to the drivers side of the trunk then down along the car with the fuel line. Best bet, empty the bottle for winter ... it's not like you'll need it anyway.

DO NOT put anti-freeze in the I/C sprayer bottle. Not that it'll harm the system, but you'll wind up spraying your IC with it. Good luck getting the smell out after that ..
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Old 11-22-2005, 01:00 PM   #11
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You could fill it up with windshield washer fluid. Its not as toxic as antifreeze an is usally good till 25 below. Or just empty it. When its that cold you not going to have any heat soak problems anyway.
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Old 11-22-2005, 02:27 PM   #12
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Quote:
Originally Posted by STi(m)
add some alcohol to the mix, or anti freeze. unless its like 40 below you wont have to worry about it freezing.
I was thinking about doing this, because it makes sense, and some people do this for added cooling perfomance
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Old 11-22-2005, 02:34 PM   #13
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Quote:
Originally Posted by nate49509
You could fill it up with windshield washer fluid. Its not as toxic as antifreeze an is usally good till 25 below. Or just empty it. When its that cold you not going to have any heat soak problems anyway.

Check the flash point of your windshield washer fluid some of that stuff is quite flammable
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Old 11-22-2005, 02:34 PM   #14
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Quote:
Originally Posted by a87supra
I was thinking about doing this, because it makes sense, and some people do this for added cooling perfomance
Not sure how much that would help the IC sprayer really ... the whole purpose is that it takes heat to evaporate water, thus transfering heat from the IC into the evaporation process (in a nutshell).

What product specificaly would add to this effect?
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Old 11-22-2005, 02:42 PM   #15
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All I ever use in fall and spring is windshield washer fluid. No smells, no stains, and no fires so far.
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Old 11-22-2005, 02:54 PM   #16
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My evo's manual said to put windsheild washer fluid in it during the winter. So when I got the STI last December, I just emptied out the water and put windsheild washer in it. I didn't like the idea anyways of water in the rubbler lines freezing.

I havent had anyproblems so far.

or you can just empty it out, but I hate that yellow light that turns on when you have no water.
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Old 11-22-2005, 03:06 PM   #17
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Do you even need to use it when is that cold outside?
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Old 11-22-2005, 04:37 PM   #18
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Do NOT!!!!! put anti freeze in the tank!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!1

....I'd pump it almost dry...pour a bottle of rubbing alcohol in it and and fill it to ~2/3 full and spray it until it was 1/2 full and pull plug on the pump until spring....and done

.....but what do I know.....
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Old 11-22-2005, 05:51 PM   #19
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Uncle Scotty: Why not use winshield washer fluid? I understand that if it is cold enough out to freeze water the spray isn't needed, just thought it might be an easy remedy.
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Old 11-22-2005, 06:22 PM   #20
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Quote:
Originally Posted by k mier
Uncle Scotty: Why not use winshield washer fluid? I understand that if it is cold enough out to freeze water the spray isn't needed, just thought it might be an easy remedy.

...dye it blue.........no need to do that
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Old 11-22-2005, 06:33 PM   #21
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I agree with not using the antifreeze.

But windsheild washer fluid is kosher considering the pumps are simmilar with the I/C spray and the windsheild washer.
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Old 11-22-2005, 08:04 PM   #22
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Quote:
Originally Posted by Uncle Scotty
...dye it blue.........no need to do that
ooooh....I see. Too late though, all ready filled with the blue washer fluid. No more than I will use it through the winter hope it won't stain too bad. Maybe it will clean off, Simple Green and a brush? They make pink colored fluid too.
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Old 11-22-2005, 09:28 PM   #23
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Quote:
Originally Posted by Uncle Scotty
Do NOT!!!!! put anti freeze in the tank!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!1

....I'd pump it almost dry...pour a bottle of rubbing alcohol in it and and fill it to ~2/3 full and spray it until it was 1/2 full and pull plug on the pump until spring....and done

.....but what do I know.....
Uncle Scotty,

I've been using windshield washer fluid for 6 months now and it hasn't dyed anything on my engine bay the slightest amount.
Furthermore, I would not want to use rubbing alcohol; it will harden rubber seals and lines and cause them to fail prematurely.
Just my 2 cents worth...
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Old 11-22-2005, 09:54 PM   #24
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I made a sprayer for my WRX with:
STi button + harness from wrecked Forester
Generic pump
Rad overflow tank from mid-80's Nissan Pulsar - Fits nicely between the battery & headlight.

I plan to empty it, put in a tiny bit of washer fluid, pump it into the lines, and run the winter with the tank pretty much empty.

My $0.02
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Old 11-23-2005, 03:01 AM   #25
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Quote:
Originally Posted by powerlabs
Uncle Scotty,

I've been using windshield washer fluid for 6 months now and it hasn't dyed anything on my engine bay the slightest amount.
Furthermore, I would not want to use rubbing alcohol; it will harden rubber seals and lines and cause them to fail prematurely. Just my 2 cents worth...

....bullspit
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