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Old 05-28-2003, 12:16 PM   #1
AustinSTi
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Member#: 9386
Join Date: Aug 2001
Location: H-Market, VA & JMU
Vehicle:
2000 2.5rs sedan
silverthorn

Default Quick coolant question

Well we installed a subaru oil cooler this past weekend, and it works fine, but we were in a rush, so we didnt tighten down one of the clamps on the coolant hose, so it leaked a bunch out on the way home.....I tightened it up real quick with a screw drive and refilled the coolant to the top, and then for 2 days it had a very slow drip. I finally got some free time to really tighten it down with a socket wrench and now there is no leak. My question is, should I fill it back up to the top again(coolant)?? I'm not really sure how much or often I'm supposed to change it/fill it. It sounds like the logical thing to do, but I'm just making sure. Thanks
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Old 05-28-2003, 12:28 PM   #2
joefocker20
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2004 STI
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Look in the owners manual, you fill it to the top and then fill the overflow tank. I think It's around 7.2L. You should just flush it if you havent already.
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Old 05-29-2003, 09:07 AM   #3
kickin_81
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If you can keep a good coolant/H2O mixture, then you can just fill the radiator and have some left in the overflow tank. The air bubbles in your system will be released after a day or so, and you should notice the overflow tank will be less full. Fill it up then, and you're good. It never hurts to check your levels from time to time.
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Old 05-29-2003, 01:13 PM   #4
ImprezaVA
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1998 Impreza L-SOLD
Arcadia Green

Default coolant

Remember, our radiators call for a phosphate-free or silicate-free coolant. I can't remember which one. I bought Havoline anti-freeze, which was both phosphate and silicate free. Also, use distilled water to mix with your $5 a gallon phosphate and silicate free anti-freeze, $1 a gallon. Tap water has too many contaminates that can cause trouble down the road inside your radiator. Its the orange stuff, and its not that much more expensive than regular green anti-freeze. Remember to leave the heater wide open when you start your car up if you decide to do the coolant swap. Bleed the system with the radiator cap off and squeeze the upper radiator hose several times slowly. I hate to keep going on, but if you do decide to switch from green to orange, make sure you get all the green anti-freeze out. I did this by draining the green completely out, filled it back up with just water and let it idle, drained again, filled with water once more and drained a second time. You probably know all this stuff already, but that's my $0.02.

-Charles-
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Old 05-29-2003, 02:26 PM   #5
kickin_81
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Yup, use only distilled water. No water hose. I'm just using Subaru's Long Life coolant to be safe. Using ImprezaVA's technique will fully flush out the system, but it will require more time since you're filling, draining, and refilling.
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Old 05-29-2003, 03:53 PM   #6
Dr Ken
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2000 RS (GME)
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Kicking myself for going to jiffy lube and letting them put unspecified green fluid in.
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Old 05-29-2003, 05:22 PM   #7
joefocker20
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Our radiators call for an ethylene glycol based coolant.
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Old 05-30-2003, 10:45 AM   #8
BOY
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99 RS-T RIP
02 Forster-S

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Per the owners manual:
Quote:
Use Genuine Subaru phosphate/silicate free coolant or equivalent
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Old 05-30-2003, 11:17 AM   #9
joefocker20
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Hmm.. I wonder if there's a difference in the cooling system in 02? My manual states, "FOr adding, use genuine SUBARU coolant or an equivalent: a mixture of 50% soft water and 50% ethylene-glycol basis coolant".
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Old 05-31-2003, 02:15 AM   #10
cvalle-sd
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I use all distilled water with a bottle of water wetter...but my radiator's already shot, and I'm just waiting to replace it (after my fender, bumper, and tires)
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