Hi. Any common fault when losing coolant! Bmw f10 525d the 2.0 one, message today saying low coolant, topped up and now see what happens. Couldn’t see anything obvious around engine bay of any leak when car was running. It’s had the egr cooler replaced in April so I assume they topped the coolant up when they replaced this. Would the car naturally loose any over time or will this be a fault. Something with water issues with this car lately, first the headlight condensation a couple months ago, sorted that then the rear footwell soaked last week, sorted that, now this!