GQ 4.2 naturally aspirated 1994 manual diesel. 407000 kms. Runs very well with negligible oil usage between changes.
Oil is appearing in the coolant overflow tank, but the vehicle is not overheating, is not losing coolant, and there are no air bubbles apparent with the radiator cap removed.
A strange one and I'd welcome any suggestions as to the possible cause(s) and solutions.
Thanks.