When I read the manual it calls for oil change every 12 months or 1600 km (1000 miles), and same with demand drive oil, and front and rear gear case and transmission.

I just called the dealer and the service guy told me that’s only required for the first oil change. Then he said you can go 5000 km (3000 miles) between oil changes, diff fluid changes. Something doesn’t seem right especially since the manual clearly says it should be EVERY 1000 miles.

Am I reading the manual incorrectly??