I think I changed mine at about 16k... need it or not...
.. but I just met up with ol' friend Lupo,.. and next change I'm goin' with ATF tranny fluid...
It's a hydraulic fluid, and very consistently pure... much more so than "fork oil"... (works out to 13wt, I believe)..
It will give, slightly faster rebound.. and with roads being what they are nowadays... that might be good...
I also have about 1/4" of washers on top of my springs to decrease sag in the forks... goes well with the ATF...
Lupo,... is a local Savage rider, that can ride like a M'rF'r... (he scares me)..
.. and a dedicated Guzzi rider, that has become addicted to our humble Savage...
He's fast... did I mention that?,.. He's very fast!...
Anyway,... when someone smokes yer' a$$... you listen...
Just thought I'd share...
So,... fresh fluids can't hurt... just thought I'd mention,... I'm goin' with ATF tranny fluid on my next change...
.. (may not be right,.. but I go with people that know more than me)...