No go for fishing this weekend for me. My lower unit reservoir was filled with water. Talked to a mercruiser technician, said I more than likely had a seal go out. Said that's why mercruiser put reservoir on so you would see when you would have issues. Older than 2000 models you wouldn't know until you have issues or drained unit in fall. Just a FYI. I check out every other outing my fluids and motor belts and hoses. So pulling out and rebuilding lower unit, checking gumball bearing and bellows. Keep on perchin