I'd include nearly a couple of pint or so of distilled h2o.. anymore and i would pick up some coolant to mix. if it goes off once more, provide it to your supplier. its very likely just evap loss of the water percentage of the coolant mix. glycol doesnt evap https://manuelbozlw.blogsuperapp.com/27784649/a-simple-key-for-types-of-coolant-for-bmw-335i-unveiled