Chimo, you are correct.
It is widely accepted that the V4 OMC motors are good for at least 2000 hrs.
The pro abalone divers used to recondition the gearboxes at 1000hrs (due to lots of work following the diver) and trade the motors in at 2000 hrs.
Keep in mind that any motor is only ever as good as it has been maintained.
Cheers
Pete