I suppose it would not hurt but it's not a not like a bearing surface that has a lot of movement ,and it could make a mess if overdone, I won't be lubricating mine some people probably will thats just my opinion on it...
I was thinking I would try that or powdered graphite, but thought I'd check with others to see what experience they have had. I guess you have used silicone spray successfully?
I've always used silicone spray on mine but will be using the graphite powder in future (that my wonderful mate put me onto). That stuffs awesome, and nearly zero chance of more dust attraction.
Next job on my list one day is getting them all cleaned up and repainted. Has anyone done that and what did they use? I have a bit of a plan in my head...but not a firm one.