08 diff\10.5 carrier
Senior User
Joined: Jul 2006
Posts: 406
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From: Haysville Ks.
Did they all come with the sterling axles? How can I find out if I have one? Sorry about the dumb questions but I am going to try and change my fluid this week and I might as well put on a new cover if it will fit mine. I am going to use royal purple fluids, is this alright for our trucks, what weight of oil?
Senior User
Joined: Jan 2004
Posts: 254
Likes: 2
From: Bakersfield, CA
IIRC, the SD's use D80's in the F350 dually's and D135's in the F450's. I don't remember on the OBS's.
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Senior User
Joined: Jul 2006
Posts: 406
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From: Haysville Ks.
Ok my diff is 12 bolt and it looks like it should fit. It looks like the one in the pic above. I looked on the door and the axle code says D5. Is this a posi or limited slip? How much fluid does it hold with the new cover?
Senior User
Joined: Jul 2006
Posts: 406
Likes: 0
From: Haysville Ks.
Ok my diff is 12 bolt and it looks like it should fit. It looks like the one in the pic above. I looked on the door and the axle code says D5. Is this a posi or limited slip? How much fluid does it hold with the new cover?
Post Fiend
Joined: Apr 2004
Posts: 12,835
Likes: 3
From: Silver Lake Dunes, MI
your diff should be a 4.10 with limited slip if I remember correctly. it will hold between 3 and 4 quarts. the new cover doesn't hold any more oil but I think the capacity is like 3.5 quarts or close to