I have a 1975 - 55 hp Evenrude that runs great. by mistake I never winterized and now that the snow is gone I cranked it up and took it for a quick warm up on the lake. With some fresh gas and clean plugs it started hard but finally fired up and ran fine. When I pulled it out of the water I noticed a little oil drippping from the lower unit. I got it home, drained the old oil out and water came out along with oil. I refilled it and have noticed oil still dripping from what looks like a small drain hole. Is this normal or have I messed up the lower unit and it will now need repairs? Thanks For Your Help.