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Question - How Much Does Your Coolant Rise/Expand?

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Old 07-30-2007, 12:58 AM
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Question - How Much Does Your Coolant Rise/Expand?
Just curious...'cos I notice my coolant expands and rises by just about anything from 0.5mm to 1cm above the F mark. It's back at the F mark when cold.

Do quite a lot of highway driving and don't really get into traffic snarls.

What about you?

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Old 07-30-2007, 02:14 AM
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That sounds about normal (and completely ****) to me.
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Old 07-30-2007, 03:58 AM
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Yeah I guess I'm really being ****...but then I used to see that green stuff rise much higher previously, than now..
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Old 07-30-2007, 05:26 AM
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I think everything expands when its heated.
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Old 07-30-2007, 06:06 AM
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That is about normal. A little more expansion might even be OK.
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Old 07-31-2007, 10:46 PM
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You can actually measure a HALF A MILLIMETER variation in your coolant, in the reservoir ?
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Old 07-31-2007, 10:59 PM
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I think he meant .5cm, not mm.
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Old 07-31-2007, 11:42 PM
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I'd say it's more than that on my car using the Evans NPG-R coolant, at least 1/2"

most people overfill the surge tank too
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