Originally Posted by
easyupbug
Unless you are saying the bicycle specific WD-40 stuff, WD is mostly a solvent with something like a 1/4 of the spray a petroleum lubricant, OK for no harm flushing of caked up lubes in a sticky shifter but afterward I would lube with something that does not gum up over time like tri-flow as you say.
I spray the insides of my STI shifter with this:
https://www.amazon.com/DuPont-Non-St...dp/B003UTX0R8/