Mowing MF2325 Gear Oil

[DJRussell]

Hi All.

I recently purchased a GC 2610 with 60 inch mower. I don't have the manual and need to add some gear oil to the mower gearbox. The mower is a MF 2325 with 60 inch deck, and I assume it takes GL-4 gear oil likely 80W, but would like to be sure before I add.

Thanks