Additives to nitromethane

[flapjack]

I know they have an additive (an indicator) which turns blue when nitro is unstable. But do they add a lubricant for the pump or blower. I know the rules say no additives, but I can't see a lubricant being a performance enhancer. Or are pumps and blowers good enough these days that the fuel doesn't need a lubricant?

 

[MM]

Both are lubed religiously. The cars are actually equipped with a hydraulic pump that lubes the blower during the run now.