Just purchased all the tools, etc. to start changing my own fluids. I also decided to give Amsoil a try for all 3 fluids. Going to change the oil after my dyno tune next week, and do that myself.

Looking forward to seeing if the primary and transmission fluids work a little better (and quieter) than the HD stuff. That is what I have heard from others......so we shall see.

Which weight amsoil are you gonna run in the trans? also its been stated not to run synthetic in the primary.

I do not have any first hand experience with Amsoil in the trans or primary, but I learned about it in the crankcase after I installed 222 cams in my 2012 back in '13. After the install with Harley oil, my oil pressure was awesome but the valve train was loud. I ended up double checking everything and all was right. At work I was telling my coworkers about my cam install, the power gains, and reluctantly about the noise, another dude at my work overheard and chimed in. He is a big Amsoil user, so I had him get me some 20w-50 from wherever he did and changed the oil again in the bike. The reason I am a believer now is because after the oil change the valve train quieted down completely. Besides Amsoil in the oil pan I used to run Redline in the trans and primary with good results on the '12. Good luck!

Probably a good idea to use gear oil for you transmission and primary rather than 20w50 motor oil. Motor oil is for motors. Transmissions and primarys need oil that clings to gears and chains rather than sliding off them.

Yeah, got 4 qts. Of oil, then they make specific primary fluid, and specific trans fluid. Like earlier poster said, the engine noise is reduced, as well as I've heard from personal friends that use it, the transmission noise is reduced and feels smoother.

I installed Amsoil 20/50 in all three holes, rode 6500 miles from VA to CA, got back and then changed it. The transmission oil came out just as clean as it went in. The engine oil came out a little bit dark, but the primary oil came out VERY dark... I should keep an eye on this, change the primary oil more often, flush the primary side, and/or go with something different?

I'd never use motor oil in the transmission. I had a bad case of neutral rattle when the bike was new and the local dealership drained what came stock and used Belray 75w140 in the trans and I've been using it ever since. Goes in clean and comes out clean, and best part is everything is quiet.

The primary oil will be dark because of normal clutch lining wear. You will also see some amount of metal from the starter gears that crash into each other every time you hit the start button.

It makes sense about using MOTOR oil... 20/50 and 75/140 are way different numbers, so I WILL change the primary oil to something different. Thanks!

yes, they are different numbers. and they also mean very different things. 75/140 gear oil would be vastly different from 75/140 engine oil (not that they'd ever make such a weight oil in the first place). point is, viscosity is measured differently. 75 weight gear oil is roughly equivalent to 10w-30 engine oil.