Welcome to the Nissan Patrol forum. To post a question and to see less adds on the forum then you will have to register
first. We are an easy going friendly forum so join in the conversations and feel free to ask any questions.
Become a forum sponsor for only $20 and see no adds with faster page loading times and many extras benefits.
The ZD hubs are sealed. Only the TD hubs can be re-oiled.
As for the OP. Check both radiator and condenser to see if they are blocked or not. Air flow is key, especially at low speeds.
Thanks, mate. Good to learn something new. What a bastard having it sealed. I wonder if drilling a set of holes, draining the oil, and fitting bolts through the hub is a possible Quick Fix?