[RobertEllis]

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 . . .

 

[93Bluewing]

Drain and refill,changing the filter, too.

You might be able to flush it out. Maybe add a little seafoam?

 

[Bike...and Dennis]

Yeah, it should clean out if you put some MMO or SeaFoam in the oil for a couple hundred miles and then change the oil to something like Rotella.
It may take two flushes if the purple stuff is real nasty.

 

[rpeters549]

Some clutches just do not do well fully synthetic. Especially if clamping force might be a little lower than when new.

 

[DriverRider]

What is royal purple an additive?