Great video on how to change your fork oil ....
Is it possible that you are thinking of a different type of bike? Perhaps one with compressed air in the forks?In the beginning he takes out the bleed screw..
You pop the fork caps first or that screw will go Into the next galaxy and you get a nice
mist of dirty fork oil....EVERYWHERE within three or four feet...
In this video he was showing how to change the fork oil with the forks off of the bike.