I'm new to power boat ownership having just bought my brother's 2007 2575 RL I/O. It has a Mercruiser 5.0L Alpha. The engine only has 100 hours on it, but for the last three years was hardly used (my brother passed last year) . My sister-in-law says it hasn't been started since last spring, although it got regular spring/fall maintenance and winterizing. In November we took it on a 20-minute spin before putting it on the trailer to bring it down to Houston. It ran OK. We've had it in storage for the last month. When I picked it up yesterday I saw this oil leaking out of the water intake on the sterndrive on both sides. I'd appreciate comments and information as to what this means. See attached picture.