so my bike is 09 96" with about 6000 on it, over the winter with everything else I did I swithed all fluids out to synthetic. now I notice more noise, engine, transmission, when I put down into 1st from nuetral the is a clunk. I just didnt seem to notice this before? whats ya'lls thoughts?

 

hmm...I always had the clunk but still I didn't notice much difference when I first changed to synthetic (which was SE synthetic) but after changing to Amsoil I noticed my 5th gear whiny noise somewhat diminished and the clutch engages smoother. Not so much a comment on dino vs. synthetic as SE vs. Amsoil I suppose. YMMV.

 

I ran Harley Syn in all three holes and immediately noticed more noise in the gear case, especially in the 5th with square cut gears. I got the Harley oil out of the trans immediately. I cured the problem with some royal purple syn gear oil, it is the ticket.

 

Maybe the oil you used is too light in weight.
I use 20w-50 in engine, 75w-90 in the trans and transmission fluid in the chaincase.

 

Drain the tranny and dump in gear lube.
Mobil1, Redline, Royal Purple, Amsoil, etc. all good stuff.

 

Well I used 20/50 in the motor for sure, the other stuff I dunno what it is, just the screaming eagle stuff....20/50 on it to I think.

 

Went from conventional to Amsoil at my last change and nothing but good things to say about it. I know it's not the same weight in all holes but I can't tell exactly what was used because I can't find my receipt. I still have a clunk, when cold, from N to 1st but not as bad as before and all other gears are smooth and quiet when shifting, and they weren't before. I hear noises when riding but nothing that sounds unusual or bad.

 

yeah, for the record what I am using is Amsoil 20-50 Motorcycle Oil in the primary and engine and Amsoil Severe Gear 75W140 in the gearbox.

 

You want to use gear oil in the trans. Ideally 75w90 or higher viscosity.

 

believe it or not HD recommends that SE stuff for all three holes...and I tried it. But I agree with you and I have gotten better results with the 75W140 for sure. It isn't even really thick and heavy like standard GL4 or whatever.