Quote:
Originally Posted by Dantilla
I would change the belts and hoses.
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Generally good advice but I would inspect everything and put your $$ where it's needed. I consider myself a maintenance freak but sometimes I miss something, like the rear pads on my old F-250 that I could have sworn I looked at recently but ran down to nothing. I wound up doing rotors, rebuilding calipers, etc.
It sounds like the PO did some maintenance, so I would go through and see what it needs. It can be hard to really see the condition of diff oil unless you can do the finger test and it looks like new. Still, if it's been changed, I never know if the last guy put the right oil in it unless there is a record or you can ask. Ford and most other ltd. slip axles are sensitive to oil if you want to LSD to work properly.
Just to really complicate things slightly, Ford specifies an additive that they sell in small bottles as a friction modifier for their LSD axles, at least on my generation truck, (early 2000s Super Duty). If you use off the shelf GL-5, which already has a friction modifier in it, then add the Ford additive, you will wind up w a limited grip rear axle instead of a ltd. slip. A one-wheel-wonder, as we used to call open diffs when I was a young guy.
