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Distilled water added to coolant?


Mileguru

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2017 Sierra 6.2L 8-speed

My coolant reservoir is about an inch below the max line. Is it okay to just add distilled water to bring it up instead of buying coolant?

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What level is it at when you go out first thing in the morning when the engine is cold?  Just curious.  Seeing you are in L. A. adding water will dilute the mixture some but since you don't get freezing weather it wouldn't hurt anything.

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The line says says MAX, not Fill to Here.  There should be two lines I would think, MAX and MIN.  Keep the level between the lines, and make sure you are checking the level at the temperature the manual says to check it at.  Usually the MAX is with the engine at normal operating temperature.  When cold, the level will not be at MAX.

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