Quote:
Originally Posted by ghostzfh
What state of the car though? There's literally two different readings. How do I know what reading to look at to make sure I'm in the optimum range?
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Like I said, both readings should be within the max and min fill lines. If it's below the min line at it's lowest point then add more coolant.
You are probably over-thinking this, is the car overheating at a long idle? If not, you're good to go.