Well i recently changed to Neo synthetic 75-90 HD , the shifting is much smoother than before. And can shift into first a little big higher.
I overfilled it the first tiem and took a bit out today, ive bene getting a click -clank when I shift, like I can hear my syncros hitting each other.
Is this a good or bad thing? Some people say it my be too slick for my syncros. I took a bit of the stock oil and put it in(like a pint or so) I will try and report back in a week or so.