oil additives

Anyone have any luck with oil additives? Maybe smoother shifting and less engine noise.

I believe it was "ENERGY" that said you shouldnt put any additives into the oil unless it was made soley for motorcycles. I was curious about seafoam, cleaning agent but dont think I should add it to the crankcase.

You shouldn't need to add any additives to modern oils. Any additives they need have already been added to the oil by the manufacturer.

Go to full syn. if you haven't already...no need for additives then :thumbup