Overvthe summer I downsized from a 22' to a 16' outboard fishing boat. Much easier for this old man to load and unload. This boat has a 1992 four cylinder two stroke 40 hp Merc outboard. I have been quite surprised at how well this motor performs!!! This is the newest 40 hp motor I have ever owned, previous were 40 hp Johnson twin cylinder and a 40 hp twin cylinder Merc. While all have been good running motors, none compare to this 4 cylinder model !! This 4 cyl isvthe smoothest idleing motor I have ever owned, you can almost count each cylinder fire at dead idle... Also the quietest motor I have ever owned, no problem having a normal conversation while underway, the splashing water makes more noise. Fuel economy is almost twice as good as the previous two 40 hp motors pushing similiar 16' alum boats, and my current boat has 300 lbs of batteries the other ones did not have! People tell me this motor has old style looper design, I cant say, but I can say it is far superior to the late 80's Johnson and the mid 80's Merc twin 40 hp. This one isvoil injected where the others were direct mix, ( the Jonny was a VRO disconnected) I cant see the injected making a difference but this 4 cylinder is a far better motor in all aspects !!! I suppose some day we may be forced into 4 stroke engines, but....gonna have to go a long ways to convince me thay are that much better than my current 40 hp !!!