Hi Gareth.
Thanks for your suggestion. There's no coolant leaking externally. If there would be, I don't think I would have any white smoke from the tips.
My day has consisted of conducting tests on the car to try and determine whether its the head gasket/cracked head or the EGR Cooler.
I made a bypass for the cooler to eliminate any water passing through it and after a drive, the coolant hadn't moved from full. I then connected the cooler back up and 2 miles down the road it was below minimum. I decided to try again, this time leaving the coolant on minimum and bypassed and it never moved.
This has brought me to believe the cooler is at fault. It looks fairly straight forward to replace. A few hex and hoses and out she comes.
The only concern I have is while the bypass was in place, smoke was still pouring from the rear. While the coolant not moving was reassuring its not the head, coolant is indeed still being burned from somewhere.
Now my question is could there be an amount of water sitting somewhere still burning away, possibly in the exhaust? Or could the cooler still be seeping water from whats left over when I did the bypass? I would love to hear of anyone who has done this before and how long it took the coolant to eventually burn up?
Thanks!