I've found these;

http://www.bimmer.info/forum/showthr...ht=leatherique
http://www.bimmer.info/forum/showthr...ht=leatherique
http://www.bimmerboard.com/forums/posts/1708
http://www.bimmerboard.com/forums/posts/302202
http://www.bimmerboard.com/forums/posts/1173
http://www.bmwe34.net/E34main/Mainte...0treatment.htm

There was one for a bmw e32 on one of the leatherique websites but I can't find it now. Do any members here have any others to add?