Fork oil upgrade FZ1?

[beuleux]

A heavier weight fork oil will increase the damping, make them slower to compress and slower to recover.

This does mean that you could end up with a harsher ride because there won't be so much "give" in the system so the suspension won't absorb bumps as easily and could remain compressed if you hit two bumps in a row.

The first thing I'd do if I were you would be to look at videos explaining how to check the sag and rebound and see how the bike is reacting with the current oil setup, then you'd have a better idea as to whether to change the oil weight or not.

Thanks, I will do that, tbh I haven't had the bike long so hadn't noticed any real issues except maybe a little too much travel hard braking at low speeds, I will put it back together as stock and tweak it from there, once I've had it all off a couple of times it won't take long ?