Just had my 1K service and took the advise of Glider and many recommending my own fluids. I used syn 3 on my Fat Boy and always wondered why it shifted so loud and hard and always heard the engine winding. I put the Mobile one in and HD in the primary in the Glide. Considerably queiter engine compartment but what I noticed the most was using the Spectro Platinum in the Tranny. Glider , my man, you were spot on. Quiet, smooth and presice,and Nuetral is easier to find as well. As always, thanks for you input and expert advise.