I am helping a friend out as I am an XK8 member. He has a '10 XF that is losing coolant from an unknown source. He has replaced the water pump and a plastic "hose" in the same area. Any ideas as to where to look next? Common leak problems?
Thanks!

 

Get your "friend" to pony up for a coolant system pressure tester. They are like $40, and they are invaluable to finding leaks and testing that you really fixed them.

 

As Above^


Also..


The expansion tanks are quite notorious for splitting/leaking.
We sell quite a number of them considering the age of the cars.
Might be worth checking..


www.sngbarratt.com/ProductDetails.aspx?id=3b518998-4849-4bb2-8733-803a8e4140fa