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Old 02-23-2004, 05:43 PM   #1
WRX02WRB
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Default Empty Collant Reserve Tank?

This is the 2nd time in 26K miles that my reserve Coolant tank has been empty .... Do i have a small leak or is it common to use that much collant?? .... the Radiator was full BTW
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Old 02-23-2004, 06:47 PM   #2
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Have you checked out this thread? I don't have any other details...

http://forums.nasioc.com/forums/show...hreadid=505406
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Old 02-23-2004, 07:59 PM   #3
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Quote:
Originally posted by wannaSTi
Have you checked out this thread? I don't have any other details...

http://forums.nasioc.com/forums/show...hreadid=505406
no help there wrong engine
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Old 02-23-2004, 08:11 PM   #4
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How cold has it been? Do you see any coolant in the overflow tank after driving around fully warmed up?
If you didn't have that much coolant in the overflow tank, it could have been sucked back into the engine coolant passage because of the low temperature.
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Old 02-23-2004, 08:18 PM   #5
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its been real cold lately (past 2-3 months) probbly an average of 20-30 ... i just noticed it the other day when it was cold (the car) and it was completly empty ... i have yet to check when it is warm

anois "diltilled water" that important too or can i just use "tap" water to mix the coolant ...considering im not putting much in (enough to fill the tank)
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Old 02-23-2004, 08:23 PM   #6
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Depends on the quality of water at your location. If you have a hard water problem, I wouldn't use tap water.
Just go to the part store and pick up those ready-mixed ones.
(I am not going to go into the silicates-free discussion here. If you are really paranoid about it, pick up original Subaru coolant and mix it yourself.)
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Old 02-23-2004, 08:29 PM   #7
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Quote:
Originally posted by Karl
Depends on the quality of water at your location. If you have a hard water problem, I wouldn't use tap water.
Just go to the part store and pick up those ready-mixed ones.
(I am not going to go into the silicates-free discussion here. If you are really paranoid about it, pick up original Subaru coolant and mix it yourself.)

i read a little into that silicate-free discussion .... im not thinking its is going to matter much only filling the reserve tank ... when i flush it all ill use the Subaru coolant .... i allready have the coolant, and no hard water here ... tap water ??
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Old 02-23-2004, 08:56 PM   #8
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Tap water should be fine, but if you can get distilled water easily, I would use that.
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Old 02-23-2004, 09:05 PM   #9
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Quote:
Originally posted by Karl
Tap water should be fine, but if you can get distilled water easily, I would use that.


im gonna pick up some distilled water on the way home ...thanks


any idea why it is dissapearing .... would it be the cold??
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Old 02-23-2004, 09:12 PM   #10
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Check thoroughly around, and make sure there is no leak, and it is not coming out of the tailpipe.
Check engine oil for signs of coolant.
And if it is not leaking anywhere, most likely it is getting sucked back inside as the engine cools down. After driving around tomorrow, open the hood and check the overflow container and see if there is any coolant expanded out of the engine and into it.
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Old 02-23-2004, 09:24 PM   #11
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Quote:
Originally posted by Karl
Check thoroughly around, and make sure there is no leak, and it is not coming out of the tailpipe.
Check engine oil for signs of coolant.
checked all that before i left today, it all looked good ... like i said this is the 2nd time it has been empty ... il check it tonight when i get home (after the car is warm) to see if anything is in there


if theres nothing in it after its warm ...is there a leak ?? ...or is it just eating coolant ??
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Old 02-23-2004, 10:57 PM   #12
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It must be leaking somewhere; engines don't normally "burn" coolant. Cold weather doesn't use it up either.
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Old 02-23-2004, 11:02 PM   #13
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Quote:
Originally posted by Mike Wevrick
It must be leaking somewhere; engines don't normally "burn" coolant. Cold weather doesn't use it up either.
..so should i take it to the dealer and see what they say .... it shouldnt be a major issue should it ... the radiator is still full
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Old 02-23-2004, 11:55 PM   #14
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Take it to the dealer if it's under warranty and have them pressure test the radiator, if it's not under warranty take it to whom ever you normaly would.
If memory serves me right SOA is having a problem with the "plastic" radiators in Subarus , I was so happy the one I had delivered to me in January of 2001 had a all alloy radiator(tanks and core)
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Old 02-24-2004, 10:41 AM   #15
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I've heard of them having a slow leak at the bottom radiator hose a while back, something about a loose hose clamp...HTH.

Larry
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Old 02-24-2004, 11:01 AM   #16
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Quote:
Originally posted by WRX02WRB
..so should i take it to the dealer and see what they say .... it shouldnt be a major issue should it ... the radiator is still full
Yup, take it in (although if it is a loose clamp you might be able to fix it yourself in 5 minutes instead of wasting 2 hrs at the dealer).

Since the rad stayed full there is no risk of engine damage.
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Old 02-24-2004, 03:38 PM   #17
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Update:: I checked the level when the car was warm and it was just above the low mark .... should i fill it up to the full mark when it is warm or the low mark when it is cold??

Since it is still at the low mark i dont think im going to worry about going to the dealer right away, i doubt they would help me much anyway
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Old 02-24-2004, 04:06 PM   #18
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My coolant overflow resivoir fluctuated quite a bit for the first 10-20k miles, sometimes dipping below the "low" mark when the engine was hot (i.e. after driving home from work). I would just fill it up to the "max" line every couple of weeks when i noticed it. Lately it doesn't do it anymore, though i still keep an eye on it just in case.

Doesn't extra pressure/air get let out automatically (but slowly) from the radiator cap? Possibly water vapor too? I used to notice there would be a little water on the top of the small resivoir where the radiator cap is too, only water though, not green like coolant... Any ideas? Right? Wrong? Etc...
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Old 02-24-2004, 04:09 PM   #19
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Quote:
Originally posted by Psydotek
Doesn't extra pressure/air get let out automatically (but slowly) from the radiator cap? Possibly water vapor too?

that brings up another point ... i think i could have air in there too .... i hear a "bubbling" sound when i first start the car.... would air in the coolant system effect the fluid in any way ??
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Old 02-24-2004, 04:26 PM   #20
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The coolant itself, no, but it could mess with the level. Did you change the coolant recently? It can take a while for all the air to come out, especially if the new coolant was put in too quickly.
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Old 02-24-2004, 04:31 PM   #21
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Quote:
Originally posted by Mike Wevrick
The coolant itself, no, but it could mess with the level. Did you change the coolant recently? It can take a while for all the air to come out, especially if the new coolant was put in too quickly.
Nope never been changed yet.. you think maybe i should try to get the air out before i fill the reserve tank back up?? or just go ahead and fill it ??
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Old 02-24-2004, 04:43 PM   #22
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Quote:
Originally posted by WRX02WRB
that brings up another point ... i think i could have air in there too .... i hear a "bubbling" sound when i first start the car.... would air in the coolant system effect the fluid in any way ??
Did anyone pick up on that blaring statement ???

Next stop is your dealer if your in warranty, as if you hear perculation of the coolant I'd want it tested for emissions.

Also I'd want the complete system pressure tested including the block and heads, coolant systems don't perculate for no reason there is usually something making it do that like a head gasket, a crack in a head(s), or a crack in a cylinder wall(s).

I sure hope I'm wrong, but it seems like a weekly thing at the shop and 95% of the time it's one of the above ( I don't work around Subarus though that much it's just every other car under the sun )
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Old 02-24-2004, 04:49 PM   #23
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Might want to check under the radiator cap, when the engine is cold of course. Air in the system is supposed to end up there (being the "highest point" in the cooling system). Just top it off with coolant if there's room for more. Might want to do it for afew consecutive days to get all the air out. You can keep the reserve tank full though, probably should really.

Which reminds me... I've gotta change my coolant in afew weeks...
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Old 02-24-2004, 04:56 PM   #24
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Quote:
Originally posted by mywrx2002
...if you hear perculation of the coolant I'd want it tested for emissions.

Also I'd want the complete system pressure tested including the block and heads, coolant systems don't perculate for no reason there is usually something making it do that like a head gasket, a crack in a head(s), or a crack in a cylinder wall(s)...
Crap, opening whole new can of worms right there... Hopefully nothing too serious for you dude...
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Old 02-24-2004, 05:03 PM   #25
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Quote:
Originally posted by mywrx2002
Did anyone pick up on that blaring statement ???

Next stop is your dealer if your in warranty, as if you hear perculation of the coolant I'd want it tested for emissions.

Also I'd want the complete system pressure tested including the block and heads, coolant systems don't perculate for no reason there is usually something making it do that like a head gasket, a crack in a head(s), or a crack in a cylinder wall(s).

I sure hope I'm wrong, but it seems like a weekly thing at the shop and 95% of the time it's one of the above ( I don't work around Subarus though that much it's just every other car under the sun )
thanks for the advice .... it has been doing it for a while ...once you get going the "bubble" sound goes away .... the only problem with going straight into the dealer is the Boost controller .... could they relate that in any way to the coolant system ... i no longer have the factory lines so i cant just "take it off" real quick



Quote:
Originally posted by Psydotek
Just top it off with coolant if there's room for more.
i checked it yesterday and it was too the VERY top

Quote:
Originally posted by Psydotek
Crap, opening whole new can of worms right there... Hopefully nothing too serious for you dude...
yea i know... ...im worried now
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