Changing fluids and differential.
I'm going to be changing the fluid in both diffs soon, I'm at 149,XXX and its never been done before. I am looking at putting a PowerTrax no-slip or Detroit mechanical locker in the rear axle of my truck. Thoughts or tips?
What all will I have to do for it to work correctly. I have a moderate knowledge of trucks, just not exactly sure what all is involved in doing this swap. Thanks. It's the 8.8 with 3.73 gears 4.6L and it's on 33's. Thanks.
What all will I have to do for it to work correctly. I have a moderate knowledge of trucks, just not exactly sure what all is involved in doing this swap. Thanks. It's the 8.8 with 3.73 gears 4.6L and it's on 33's. Thanks.

