I check my B-max oil and water every week as I do about 30,000 miles a year and after owning a Rover K Series I'm paranoid about coolent !!!!This morning I was due to drive into town to get an MOT. On the way I stopped to get some windscreen wash and top the washer bottle up. To my horror the coolent in the expansion tank was almost gone. I bought some bottled water and topped it up. Its not dropped again after 15 miles . . . . Although obviously something is wrong . . . . but has anyone had same problem ??