All machinery uses some type of lubricant. Just as a car engine needs oil to lubricate its moving parts other types of metal on metal contact also require lubrication. The main difference in the types of lubrication is the force being applied to the two surfaces that require lubrication.
There are lubricants that place a thin barrier on the metal to provide protection for high-pressure contact of surfaces such as that engine or chemicals that enhance the ability of one surface sliding on another such as coil tubing in casing.
Kaliber Chemicals has the following product(s) available:
FR30-MTL – Effectively reduces coefficient of friction between metals