L3130 Just changed front axel oil switched to 80-90 gear oil drained a little from both sides when changing motor oil for a look see {Struck gold} changed front axel oil at 1000hr serv. used udt 2 did not strike gold at that service time . Don't know what oil was in it then as I just got it. Had 950 hrs . Struck gold this time very fine . Thats why the switch to gear oil. Think UDT TO LIGHT 1,165 hrs & two yrs "THOUGHTS"