I'd personally increase nearly a couple of pint or so of distilled drinking water.. anymore and I'd personally get some coolant To combine. if it goes off all over again, bring it towards the vendor. its possible just evap lack of the drinking water portion of the coolant blend. glycol https://automotive-service06171.acidblog.net/58333629/the-basic-principles-of-types-of-coolant-for-bmw-335i