:loopy: OK, I assume this has been asked before...... I recently swaped out the FD on this '93 K1100, as it was making metal on the magnetic plug. I am ready to put oil in the replacement, and I hope to avoid another failure. Is 75/90Wt Synthetic lube OK, Better, A bad idea, ??????? Sometimes I think I'm doing the best and find out it causes some other related problem. Seals compatible? I would appreciate a comment from someone that has done this. Thanks.......... KC cool shades cool shades