- Buick Ownership
Greetings, 2018 X with 15k. Very good info here. Thanks all. Crawled under ours yesterday to see a leaky pinion seal. Happened to be by our dealer so stopped just to check in and ask about it. Service person hadn’t heard anything but advised getting it in. The diff case was clean but slinger had sent it all over the curved body member above the rear. We can’t get in for a while so I wiped it clean and will do my own check again. I will update. C.