We just took the oil inj. off my dad's 94 pro v 150 last year. I can twist the props to the limiter at 6200 rpm's. We decided that since the motor was that old (bought it new in 94) that it was best to make sure it would be getting oil at all times instead of worrying about the oil injec. going out and blowing the motor. My 225 pro max is the same way. Yes it can be a pain mixing but it's worth the peace of mind knowing it's getting the oil regaurdless.

My $.02.