With the cold weather creeping in around here good to check the coolant levels in your car, and do it in the morning when the engine is cool and you minimize chance of getting antifreeze sprayed on you. Be sure to check that the level is in line with the cold reading on the resevoir. Another thing to keep in mind is you have a BMW, they only take BMW coolant, apparently it has extra protective ingredients. Fine by me, radiators in those cars aren’t cheap.