Late to the game, but have been binge watching Ryan F9 videos on youtube during this lockdown nonsense.
I clean with WD40, nylon brush, spray down with simple green, rinse with water. Doing this for decades.
I had used a short blast of PJ1 Blue Label on each roller to lubricate. Going to switch to gear oil now. Have had a jug of it kicking around since I bought a Buell in 1999.
Doesn't go bad...or does it?