Metal in changing diff fluid

[015point9]

Hard to quantify making a post and didn't think about taking pic at the time.

Saw several slivers stuck to magnet when changing diff fluid.  Size was about diameter of sewing thread and .25 to .50 inch long.  Probably 20-25 total.  

  Almost 90,000 miles (total) and 30,000 since last fluid change five years ago.  3/4 ton and most of miles towing 8-9k trailer.  Only difference this change from past is now have air bags.  

Normal or abnormal?  If abnormal, what is next step?

Edited February 26, 2018 by 015point9
Screw up

[greed]

I had slivers of metal on my magnet, maybe a bit bigger than what you describe. I checked the backlash and it was .027. Had the rear end rebuilt and it turned out a pinion bearing and a carrier bearing had gone out. I also had a lot of metallic paste on the magnet. I was just off the 36,000 mile warranty. I was running 75-140 Sta-Lube synthetic lube.

[dripley]

Dont forget the limited slip lube when chaging the fluid if you have the LS diff. That can put shavings in there also.