Hi all i have had my e39 528i for about 2 weeks now I just checked all tge fluid levels as i do every couple of weeks and noticed the water/coolant level was right down so i looked in the manual and it said top it up till the red fliat stick is level with filler cap Now the problem there is no float stick so i just topped it up to about 3/4 the way up the tank Is there a y common problems on the 528i e39 that cause water loss or could it just be its been low.for a while and noone ever checked it before????? Temp gauge does not move past half way even after a blast on motorway she stays at a constant temp Any ideas?????? Thanks