ya my Clymers says 10w-30 but i figured maybe 30 years later there would be a better alternative
"oh no fork oil" ?? ....post useful things thanx
Gribbs, you asked an honest question and we who have been around awhile have been through oil threads. As a fellow 78K owner I realize we have to stick together.
Engine oil is a matter of taste. I like Rotella since it has tried and true additives you cannot find in Auto oil any more. The wide viscosity works for me since the temperatures vary a lot around here. I am for too lazy to change the oil for each season. I change it twice a year with filter and frequent changes I feel make a big difference. We have one member that changes at high mileages and he as a stupid amount of miles on the original and unrebuilt motor. I don't know what brand he uses, but it was nothing special.
With brake I use Dot 4 and have used others, it stops the same. I do change that every year since it is a small amount and it discolors quickly.
Fork oil depends on how you ride and how you want your bike to feel. We all have different mileages on our forks. springs do fatigue so one viscosity may feel better than another. I like a softer fork since I want a smoother ride over bumps. If you crank it in the twistys a lot, you may have to tinker till you get what you want.
Seafoam in the tank is very popular. Does it work, I dunno, but I use it. I do know a good run on the highway for an hour or more, working that motor hard seems to make them run better. These motors like to run.
The answer to your question, is that there is no one size fits all answer.