Thx jonesin, but what difference does it make? I ask because I just topped it off ( added a cup) of that prestone antifreeze. Btw, is there anything else I should replace while doing the tstat? If they change the coolant totally, would it be considered a flush? And how much coolant would they need for it?
Last edited by bmw_novice; 01-27-2013 at 01:39 PM.