Just curious if coolant can evaporate from a closed system. My non MB coolant is about an inch below the minimum mark and it has no leak that I can detect and UOA shows no coolant in the oil. I dont know if I have a problem or not and the mazda forum peeps only seem to care about what color lights to put under their cars.

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1984 300SD Orient Red/ Palomino
1989 560SEC
2016 Mazda 6 6 speed manual
1995 Ford F-150 reg cab 4.9 5speed manual