I have a CSC Viper kit and have been using Progressive Suspension springs since before the conversion. I know there are opinions that they are too harsh and others that like them. I'm fine with them so that's not what this thread is about.
My question is about the different weights. I am in the middle of the rebuild and ready to start filling them back up with oil. I did them several years ago but for some reason I can't remember what weight fork oil I used. Long story short, I had moved since last time and garage is still a mess. When I ordered all the replacement parts this time (seals, bushings, etc...) I also ordered Bel Ray 15w oil. In back corner of garage on a shelf, I just found a half filled bottle of Maxima 10w oil. Now I'm second guessing my choice of weight. I honestly don't recall if I used 10w or 15w on my last fork overhaul.
For those using PS fork springs, am I ok using the 15w oil or would the 10w be the better choice?