So I order a Mag-hytec diff cover for the Sterling 10.25 axle. I just wanted to see if anyone else here has one, and if so, do you fill it to the stock fill level or what Mag-hytec recommends? I have read some people saying that filling it beyond the stock level it may cause the axle seals to leak.

 

That much i dont know, but i do know in dennys dodge his finned cover dropped max axle temp about 40* while towing.

 

Personally I'd just run the OE level unless towing heavy enough to worry about temps- higher fill will assist in cooling. The cover will obviously help with that, and probably holds a little more to begin with. I run one on my other rig (dana 80) which I tow pretty heavy now and then (dozer).