How much gear lube loss after fluid change?

[lrdchaos]

Had the drive pulled last winter and the gear lube changed. Put 7 hours on the boat over the last 2 days, and the fluid dropped from full to add, basically 4ish ounces. I don’t see a film in the water or anything in the bilge, how much is normal after a drive pull/lube swap?

 

[alldodge]

Not an issue. If it happens again, then start watching closely

 

[Earl Cordova]

Agreed.
The person you had change it was probably in a hurry and didn't wait for all the air to work it's way out.