Quote:
Originally Posted by ahausheer
If a pressure test checked out ok and you are still looking coolant, that narrows the possibilities. The pressure test if done properly should rule out leaks due to hoses/connections etc. So that leaves either escaping through the top of the reservoir or escaping through something that requires more pressure than what the pressure test can reproduce. For example a crack in the head gasket or engine block, something that may be affected by heat or stress. Or am I wrong?
I imagine you guys that are loosing coolant have checked the oil or looked under the oil cap for milky residue?
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Be advised
That milky residue can also be condensation from not driving the car to operating temperature.