Everybody knows what a lubricant is, and we use lubricants to reduce friction in order to prevent
chaffing, scuffing and wear between two surfaces that are moving in relationship to one another.
Lubricity is the term used to rate the effectiveness of a lubricant, and a system of measuring this was
devised by applying a controlled amount of friction between two surfaces, using the lubricant under
test to protect these surfaces, and then measuring the amount of wear that occurs to rate that
lubricant's performance.