There is an extensive set of discussions on the Club website at: http://www.imperialclub.com/Repair/Exhaust/riser.htm That being said, one item mentioned was a GM product for lubricating the exhaust riser valve assy. Does anyone know what this consisted of, or if it is still available? Joseph W. Strickland 1021 Vaughan Lane Tioga, TX 76271-2937 ________________________________________ PeoplePC Online A better way to Internet http://www.peoplepc.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 iml.webmonster@xxxxxxxxx To UN-SUBSCRIBE, go to http://imperialclub.com/unsubscribe.htm