There is specific stantion lube. Spray it on, cycle the fork a few times. It will pull some of the funk in the dust seals up that you can then wipe off.
If the fork was used you can / should pull the lowers off and refresh the oil bath and check the wipers.
Also, until I looked at in relative detail recently, I hadn't realised that one brand's 20wt oil can be very different to another. It's all about cst@40 degrees, whatever that is.
There is specific stantion lube. Spray it on, cycle the fork a few times. It will pull some of the funk in the dust seals up that you can then wipe off.
If the fork was used you can / should pull the lowers off and refresh the oil bath and check the wipers.