in an italian forum looking at my engine bay some guys say that our caburetors need to be "lubed" opening the cap higlighetd here in red



using "some oil". they say the type is not really relevant, the main thing is that this stick has to be "wet".

effectively, I simply "dipped" the bottom of the stick in dex3 Atf and the car at cold start used less time to have a regular idle after removing choke. The idle on the car is quite regular but I felt a better crank on following cranks.

My question are...
- is it so necessary to make this thing or is a "mith", I suffered a placebo effect? :P
- there is some preferred oil to put there? and what about if I don't know what was (if it was) already there?
- ideas on how much frequently it has to be checked?
- how much to put in? here's my stick bottom.