Today I noticed minor crrr...crrr sound when I press clutch pedal fully. Last bit of pedal movement makes this sound. When I traced it to the engine compartment I saw the lever shown moving back and forth (indicated by the two headed arrow). Plunger from the black cylinder presses the lever and moves it when the clutch pedal is pressed (hydraulic system I believe). I doubt lack of lubrication in contact point between the plunger and the lever or the hinged part of the lever (both indicated by single head arrows) is causing the sound. I hope it is not the beginning of the clutch giving up! Though the car has done close to 40,000 kms on stock clutch, it doesn't have any other signs of clutch problem. I am optimistic lubricating the lever and plunger joints will fix the sound. Can I use apply grease in the friction points to lubricate them? Please suggest.