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Message: <blockquote data-quote="beemerback" data-source="post: 566616" data-attributes="member: 24011">I have been having my X5 for 4 months now.  During the first week of ownership, I have replaced the expansion tank and cap (on advise) and have not top-up any water since then.  Suddenly last week...."ting" Check Coolant Level" and about 600ml water was added in.  Is it normal to top-up water after some time?  I am monitoring the water level on a 2-day basis now and has been using the car everyday.  Yesterday I went up to a farm and did hill climbing and exploring (see my comment in X series - are u proud of your X).  I will check the water level tomorrow morning.  No warning came on so far.Do you guys do topping up every month or so?</blockquote>