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Re: activity in my coolant exp tank.. is that norm (archive)
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Posted by Graeme Munro on September 17, 2001 at 16:20:53:

In Reply to: activity in my coolant exp tank.. is that normal?? posted by Don C on September 16, 2001 at 20:08:11:


I haven't seemed to notice before, but I am getting a churning of coolant in the expansion tank. I am not sure if it is boiling or just swirling from the engine running, - but I have not noticed this before.

I have replaced a few hoses recently and when bleeding the system I don't feel that I ever noticed an bubbles coming out as the Bently says to watch for - which didn't seem right.

The temp guage has been at less than half even at extended idle which is less than it used to run before I changed hoses. I don't believe I am at a 50/50 mixture and probably have more water than coolant at this time. I was going to have it flushed at the dealer before winter.

I was hoping that someone may remember what their coolant tank fluid looks like while running with a hot engine.

Thanks,

Don C
87 eta


Don, when the thermostat opens, the coolant header tank looks like the inside of a washing maching with no clothes in it while it is gyrating. This is a normal process, but please check your engine oil dipstick, to see it the oil is white, indicating a blown (or blowing ) head gasket..

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