raying:I had the misfortune of thinking that if I put some Royal Purple in my engine (1980 GL 1000) it would run better! Of course, this caused my clutch to start slipping. I changed the oil and put in the recommended oil, (Per Clymer Book) but after riding it for 200 miles or so, the slippage continues. Is there anything else that I could add to the oil to help this situation? I would like to hear your thoughts . . .