I would add as much as about a pint or so of distilled h2o.. anymore and I'd get some coolant To combine. if it goes off yet again, carry it for the seller. its probably just evap lack of the water portion of the coolant mix. glycol doesnt evap as https://whatisaspoileronacar73614.blog-eye.com/27375458/types-of-coolant-for-bmw-335i-can-be-fun-for-anyone