I just caught this subject off my "IML digest", so your question may have already been answered..... The whirring noise you describe is probably not from the suregrip (assuming your unit has one), it sounds more to me like either your ring and pinion backlash, or pinion depth adjustment is off. Either they have somehow come out of adjustment, but more likely the gears are worn. If it were setup incorrectly from the start, they would wear out prematurely. The limited slip (or suregrip) additives are for the clutches which don't "whine", they chatter on turns. Bill Roddick '64 Imperial Crown '72 'Cuda 340 '95 Concorde http://allaroundmopars.com ----------------- http://www.imperialclub.com ----------------- This message was sent to you by the Imperial Mailing List. Please reply to mailing-list@xxxxxxxxxxxxxxxx and your response will be shared with everyone. Private messages (and attachments) for the Administrators should be sent to webmaster@xxxxxxxxxxxxxxxx To UN-SUBSCRIBE, go to http://imperialclub.com/unsubscribe.htm