Motor oil or engine oil is an oil used for lubrication of various internal combustion engines. The main function is to lubricate moving parts; it also cleans, inhibits corrosion, improves sealing, and cools the engine by carrying heat away from moving parts.
Motor oils are derived from petroleum-based and non-petroleum-synthesized chemical compounds. Motor oils today are mainly blended by using base oils composed of hydrocarbons, polyalphaolefins (PAO), and polyinternal olefins (PIO), thus organic compounds consisting entirely of carbon and hydrogen. The base oils of some high-performance motor oils however contain up to 20% by weight of esters.
Read more about Motor Oil: Use, Non-vehicle Motor Oils, Properties, Grades, Other Additives, Synthetic Oils, Bio-based Oils, Maintenance, Future, Re-refined Motor Oil, Packaging
Famous quotes containing the words motor and/or oil:
“The motor idles.
Over the immense upland
the pulse of their blossoming
thunders through us.”
—Denise Levertov (b. 1923)
“Can he who has discovered only some of the values of whalebone and whale oil be said to have discovered the true use of the whale?”
—Henry David Thoreau (1817–1862)