Mercruiser Alpha one gen 2 leaking gear oil

[Nicyutrick]

Hey guys slapped a take out upper drive replacement in and came back to it leaking gear oil from weep hole. You can also see the gasket by shift cable is all greased. Attaching video and pictures. Any ideas?

 

[Nicyutrick]

update: just removed upper from lower and a pool of oil was sitting in there trapped? Kind of looks like oil is coming from upper where lower shaft goes into upper? I don’t know

 

[Scott06]

Yes would agree that upper driveshaft seals are damaged. You can pressure test to ID if other seals are leaking

 

[dubs283]

The pocket below the upper drive shaft will always hold gear oil, even when the drive is fully drained. When you split the drive halves the oil drops down the lower driveshaft onto the water pump housing. I've never found a way to not have this happen

Instead of splitting and partially disassembling the drive you should have pressure tested the drive complete. Now it's WAG time as to which seal(s) are failing