My new tug

G'day Carl
Good to have a new truck but when service time comes I think there are a few items you should be aware of.
The old BT50 had a service interval of 40,000km before the gearbox oil and diff oils were drained for the first time. Dmax And Colorados have this at 10,000.
With all the fine stuff which comes off the gears in these units I think to have it grind away for another 30,000 before draining is too great a distance.

If you tow frequently I would have these diff,transfer and Gbox oils changed sooner seeing it is the first time.
These intervals do rely on the dealer actually doing the work at the correct time though. Many makes/dealers are not doing the services. Book gets stamped though.
Mark all items to be checked or drained and refilled, so you know they have been done. This is the only way to know.
Do not trust the dealer to do it, you must check before and after.

Ross M