Q. Which part does not need oil as lubricant :
Solution:
Oil will improve the functioning of some parts, notably when applied to the carriage rails. Apply very sparingly, with the end of a pin or paper clip. Use a light, high-grade oil. 3-in-1 Oil is an easily available option. Probably a better choice is gun oil, such as Hoppe’s Gun Oil, or a penetrant such as PB Blaster. It’s a bad idea to put oil in the segment (the slotted piece that holds the typebars); the oil can get dirty and gummy after a while. It’s a bad idea to use WD-40 on a typewriter. It is not a good lubricant for fine machinery and after a little time, it will get gummy and make things worse than ever.
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