If theres water in it, yes. Froze up with the cold. Did you pull your TM prop off yet. Could be fishing line wadded up behind prop. Thats what will take a TM seal out quick. I remove mine at least every other trip to check. You'd be surprised how many times & how much line they'll pick up. Same with big motor prop. Preventive maintenance : saves money, less breakdowns,more trouble free fishing.
'98 Tr20 Triton completly updated & rigged, 05 Magnum c-channeltrailer
'94 Merc 200Xri completly rebuilt & noseconed/low water pickup lower unit.