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Old 02-14-2013
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Re: Coolant circulation issue - is the water pump working?

If your engine does not regularly overheat, I would think your coolant circulation pumps must be working.

Here is a wild guess at what might have happened. The two coolant types you used where not compatible and did not mix. They also had different densities. So after sitting for a while, they heavy fluid went to the bottom and lighter on top. When you opened the coolant passages, you see different colors in different areas.

If you still have the two fluids, mix them in a clear jar and see if the separate and settle top and bottom.
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