The trans-axle uses the same oil for the transmission and rear end. EZGO calls for 30wt. non-detergent oil. If you just want to check the level...
Club Car Golf Cart Axle Removal
Remove the snap ring and the axle will slide out. The bearing is pressed on the axle.
This post is about how to service your gas Club Car DS gas models 1992-2005 with the FE290cc engine and most FE350cc models.