Which Fork Oil?

[darrsi]

Now you're getting the idea.
It's always best to choose a brand and stick to it. Personally I always use castrol so I know where I'm at but TBH I find castrol 10w to work well all year round  and you can fine tune with the damping adjusters.
All this assumes of course that you change your fork oil every year.

I was gonna say, i very much doubt that the majority of people change their fork oil every year, i certainly don't.
So with that in mind any new fork oil will tend to feel better than before, regardless of weight if it hasn't been changed for quite a long time.