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Old 07-24-2007, 04:45 PM   #1
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Default changing thermostat and coolant flush

So I bought a 180 t-stat (my old one was stuck open anyway) and looked into my haynes to figure out how to put it in... and yeah, didn't know I had to flush the coolant! My apartment complex doesn't have a hose I can use, plus I've never done it before, kinda scared... Why DO you have to flush the coolant anyway? I don't get it
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Old 07-24-2007, 05:10 PM   #2
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You don't have to...

siphon about 1/2 gallon of coolant out of the radiator and you are all set.
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Old 07-24-2007, 06:24 PM   #3
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As stated, don't FLUSH the system, just empty some from the radiator.

Purpose: When you pull then t-stat housing off the LIM, coolant doesn't go all over the ground. Refill when done.
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Old 07-24-2007, 06:27 PM   #4
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I just did this, coolant all over the ground lol. Just wondering though what do you use to take coolant out of the rad?
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Old 07-24-2007, 09:45 PM   #5
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could one just undo the lower radiator hose and just let it run into a container or something?
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Old 07-24-2007, 10:01 PM   #6
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There should be a drain plug on the driver'* side of the radiator towards the bottom, accessible through a hole on the back side of the radiator.
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Old 07-24-2007, 10:02 PM   #7
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That'* a LOT messier to empty from the bottom. Go to the hardware store and get like 6' of 1/2" diameter clear tubing, save an old milk jug or other suitable container and go to town. VERY easy to do
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Old 07-24-2007, 10:13 PM   #8
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Quote:
Originally Posted by dillcc
That'* a LOT messier to empty from the bottom. Go to the hardware store and get like 6' of 1/2" diameter clear tubing, save an old milk jug or other suitable container and go to town. VERY easy to do
what he said... alot easier.
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Old 07-24-2007, 10:22 PM   #9
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So after it is changed should I notice the car running cooler on the guage?
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Old 07-24-2007, 10:29 PM   #10
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Yes, a 180 will open at 180, keeping the engine running cooler.

Air still must be flowing through the radiator though, so sitting in traffic on a hot summer day will still cause your temps to go above 200.
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