We have a closet door knob that it very hard to turn.
I have tried taking it apart and using WD-40 but that is only good for about 3 weeks then it becomes hard again.
Is there other way I can get this to turn better?
Would a Carb and Choke Cleaner be better and sould it be the Aerosol Can type of the Chem Dip Parts Cleaner?
Best Answer
WD-40 is not a lubricant which is why it's only lasting a short time.
Use something to clean it out, carb and choke cleaner is reasonable and follow that with some compressed air.
Then apply some graphite-based lock lube to the moving parts. These are also often called "dry" lube and they don't hold dust like oil-based lubes can.
Once it all moves freely with the new lube, you should be good to go.