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Old 03-16-2007, 07:53 AM
bativladi bativladi is offline
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Low engine temperature; losing a lot of coolant

2000 Montana 3.4L 250K (km)

Since 150K temperature gage stays steady @ first (low) mark. Only if stack in traffic the engine temp goes up – close to the red zone.
Recently had to add a lot of coolant (approx 4L per month)
What could be the problem? Is it intake manifold?
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Old 03-16-2007, 11:28 AM
bigouevos bigouevos is offline
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Re: Low engine temperature; losing a lot of coolant

More than likely, Intake manifold gasket check oil, if the color of milkshake then you're leaking coolant into oil, part # is ms98003t for gasket set.
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Old 03-16-2007, 11:39 AM
bativladi bativladi is offline
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Re: Low engine temperature; losing a lot of coolant

Oil is OK (color & consistence)

Could coolant go out (have’t noticed any leakage)
… or go into cylinders
… or could be the thermostat ?
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