Today, while negotiating my way around a parking lot, I heard some noise coming from my previously silent differential. I was turning, almost to lock, and gently accelerating, just maintaining momentum, not coasting. My diff is an old 3.46lsd from an E28 (iirc). I'm running synthetic fluid in it. Mobil1 I think, but it's been a while. I know the level is fine.
I'd like someone to say that this is a normal sound for a BMW LSD to make. I have my doubts though. It is the lsd unit that failing right? Can this thing fail catastrophically and make big trouble or will it just quit driving both rear tires when loaded like a failing American posi unit does when it fails?
I'm going to take the car for a drive tomorrow morning and find a parking lot to check things out I guess.
Any troubleshooting advice would be appreciated.
TIA
I'd like someone to say that this is a normal sound for a BMW LSD to make. I have my doubts though. It is the lsd unit that failing right? Can this thing fail catastrophically and make big trouble or will it just quit driving both rear tires when loaded like a failing American posi unit does when it fails?
I'm going to take the car for a drive tomorrow morning and find a parking lot to check things out I guess.
Any troubleshooting advice would be appreciated.
TIA
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