I am suffering this. Once a month my coolant needs topping up.Had it to two indy's who cant find any leaks and have ran pressure tests which come back fine.Thinking of replacing the flange as per alan d's old thread.Is this the right part?http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=310209877374&ssPageName=STRK:MEWAX:IT