My sons Pred 90 started leaking oil from under the plate that the oil feed line from the tank goes to the pump. I can't even see how to get to it.

Ufortunately, we didn't notice until the motor started dying. Needless to say, it is going back to the dealer... I think it is still under warrenty....

 

Sounds like the oil line to the pump has pulled off. I would make sure they change the bearings in the crank and not just get it running.