Originally Posted by Davidc83
The engine is basically the same as the BMW g650gs, just tuned a little different to give it a few more ponies. My 2009 G650gs has a 6000 mile range on oil change and valve checks; however, I always change my oil every 1000-1500 miles for peace of mind. Someone who has seen one will have to chime in if they have an oil reserve tank.
The oil tank is the frame and there is a drain valve in one of the oil lines to make it easier and less mess than the BMW tank to drain.