the engine is a mercury 35 hp to answer that question man. ive already replaced lower unit oil with quicksilver brand lube and the old didnt seperate any water out when put in a plastic bottle but i will probably run it a time or two when im on the water then re check. i have already replaced my fuel line as well as a brand new water pump kit, i have ran it on muffs since then and i know the engine is peeing so i believe all is well with the water pump. i ordered a seloc manual so i can do some more things that i have question about. i havnt replaced that shift shaft seal but i did however find the answer to one of my questions in an older post about that reverse lock on the engine. i was missing the cam gear that operates a lock rod to wrap those claws around the bar on the swivel mount. i have since ordered those parts lol just gotta put em in. i found a wire to be burnt up on the throttle box in my boat and i found a replacement set up im seriously considering putting in now rather than later, although it looks like taking the harness out of the old engine may be a headache all in itself. just figure if ive came this far might as well not scrimp lol. anyways im sure ill have a new set of questions in a couple days haha ill just take it as it comes man i didnt plan on doing this work at this point but i want it all right before i carpet the rear deck, because from there its gonna be carpeting seat bases and putting this thing back together!