I have a 93 115 V4 oil injected Yammy, that runs like a dream on a 21' Seafarer (GPR Half cabin cruiser). I seems to have been well cared for before I got it. It has 500 hours on it. There are no cracks on gearbox housing. There seems to be no corrosion anywhere (less even than my 2000 60hp Merc - it seems to have mild steel bolts that corrode on the outside of the bracket). I always flush it out with fresh water after salt runs. It has always been a salt water motor. My mechanic who is not a dealer is very impressed by the Yammy stuff. I asked him if mine had a stainless drive shaft. He said that it did, but that back then Yammy's stainless steel was not as good as the newer stuff. In terms of the water passages in the motor, the shaft and other components are they a problem. What was so good about the newer models. My concern is that Yammy decided to call the later stuff "Saltwater Series" which implies that the earlier stuff was more suited to fresh water!<br /><br />Cheers all
