Thankfully, the gearcase has been gone through and completely resealed.
It does have the roller bearing, which means disassembly and regreasing after every time.
I also have a 10′ runabout class hydroplane it will be paired with.
Any oil recommendations? I was told to run 90wt high performance.
1952 Blue Streak "B-Stock Runabout" - 1952 Mercury KG7Q
1955 Feather Craft Vagabond - 1956 Mercury Mark 55E