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Decided to pull the plug on the rear differential yesterday to have a quick peak at the fluid level. The level was fine, and color of the fluid looked brand new - even though it's been in there for about 3 years (maybe 10k miles...maybe). The deposits on the magnetic plug, however...this has me concerned.
There are some fairly big chunks going on here. Truck isn't making any unusual sounds, vibrations, grinding, or anything like that. I know I should just bite the bullet, pull the cover, inspect things and give it new fluid. Before I do, I wanted to ask the community here: what are y'all's experience with "normal" magnetic deposits?
I'm used to seeing the fuzz type stuff that's usually on the transmission pan magnet.
I've been wanting to swap in 4.56 gears for a long time. Maybe I should see the silver lining here, and consider getting a little more serious about that now.
Lay the chunks out on a paper towel, and let us see them
Anything that is bigger than the particles that you'd get from normal gear or limited-slip clutch wear is bad. If you can rub the stuff between your fingers and feel what I would say are grains of sand, something is shredding internally.
Definitely chunks. I've still got the pieces in a shop towel. Maybe I'll try to get a better photo of them. But very small pieces it is not. Truck's been parked for a couple of weeks (haven't needed it in a while). Pulling the cover is slowly making its way up list of priorities....
This Hennessey Takes the Expedition Tremor's Off-Roading Capability to the Next Level
Slideshow: The VelociRaptor Expedition gains a lift, upgraded suspension, Brembo brakes, and trail-ready equipment while retaining the stock 440-horsepower EcoBoost V6.
