1986 omc cobra. Does any know why the pivot housing is hollow and gets water from the sea water pump. I did not remove the outdrive to winterize it this year. I didn't have the boat out this year. Just ran it on the muffs for about 10 minutes. Bad economy and bad fishing didn't make it cost effective. I rewinterized it ( closed cooling through the manifolds). Can't figure out any good reason why sea water would run into the pivot housing? Sea water goes in, but doesn't go anywhere. I back filled everything with prestone. The extra just spilled onto the ground. Don't worry my cats are OK. Any input, except on the cats would be appreciated. thanks in advance.