Fg f1 rear diff.

[Aris]

Is it normal that the grease On my F1 rear diff come out whenever run it? Do I have to fill up the rear diff with grease after i use it? Thanx in advance.

 

[Bigscale-Trucks]

I suppose u use an aluminum diff, 2 way lock?
Then it is not normal that there is much grease is coming out, a little bit is possible but if you lose much it is not normal.

If the grease is coming out in the axes then you have to replace the bronze bushes, if it is coming out on the gear teeth you have to replace the O-ring off the housing.

Less grease is more locking, more grease is less locking there is no right amount out of the box.

Regards,
Steve