my auto box oil cooler is leaking, well its coming from somewhere and doesnt look like the pipes are the culprit, it an easy job?

Replacing the cooler is a simple job IF you manage to crack the threads on the cooler pipes.

Chances are you'll need to order a cooler and pipes which makes the job a bit harder....the difficult bit is getting access to the pipe at the top of the gearbox, it's a bit fiddly