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Old 05-01-2008, 04:06 PM   #1
Scooby Specialist
Member#: 60062
Join Date: Apr 2004
Chapter/Region: VIC
Location: Vancouver
2000 Impreza 2.5RS
2009 Norco Team DH

Default Coolant system acting funny?

I havent driven my car for a week or so, and now I come back and check everything to make sure everything is ok before I start driving it again. The coolant overflow tank is almost full to the cap, while the radiator is half full. No coolant leaks at all. Why would this happen?

This has happened before and I filled up the radiator with the coolant from the overflow tank, and everything went back to their normal levels, but I dont understand how the coolant moves over like that. How can I stop this from happening again.

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Old 05-01-2008, 11:06 PM   #2
Scooby Specialist
Member#: 63616
Join Date: Jun 2004
Chapter/Region: South East
Location: Mastro Subaru, Sanford FL
1996 Volvo 850 Turbo
with mods :)


Because the car sat for a while, the coolant drains back into the overflow tank. Once you start the car and run it for a few minutes, everything should be fine, assuming you don't have a leak.

Its the same concept with oil. That's why it recommended you run the car for a few minutes to circulate the oil, then let it sit a minute or two for it to drain back down before checking.

If you add coolant, you might have too much and have to take it out.
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