The most common types of lubes for sex include water and silicone. Here are the top lubes for sex, recommended by sex experts and reviewers. Learn about lubricant oil, its functions, types, additives, and selection criteria. Find out how lubricant oil reduces friction, wear, corrosion, and heat in various industries and applications. Typically lubricants contain 90% base oil (most often petroleum fractions, called mineral oils) and less than 10% additives. Vegetable oils or synthetic liquids such as hydrogenated polyolefins, esters, silicones, fluorocarbons and many others are sometimes used as base oils. LUBRICANT definition: 1. a liquid such as oil that is used to make the parts of an engine move easily together, or a…. Learn more.