As the title says, I was changing my diff fluid and all of these shards were on my drain plug. I think it's a hell of a lot, but maybe somebody else has run into a similar issue. I'm already on my second transmission (first one blew around 500 miles) and now at about 1,300 miles I fear this one is going soon as well... Check yours ASAP! I will be reaching out to my dealer later today, I will update when I get more info!