There may be a problem at the head gasket or oil cooler if fitted, unless there is a major problem, often you can see this as the oil pressure is higher than the coolant pressure and you will get little or no coolant passing the other way. Unless as I mentioned you have a major problem. A static coolant pressure test to see if coolant pressure drops can be a good place to start looking.
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Sunday, February 25th, 2018 AT 2:10 AM