Cycle oil

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Cycle oil is a light lubricating oil suited for use on bicycles and similar devices.^{[citation needed]} It is a liquid residue produced in the petroleum industry when catalytic cracking is employed to convert heavy hydrocarbon fractions remaining from earlier stages of crude oil refining into more valuable lighter products.^{[1][unreliable source?]}

Catalytic cracking produces petrol (gasoline), liquid petroleum gas (LPG), unsaturated olefin compounds, cracked gas oils, cycle oil, light gases and a solid coke residue. Cycle oil may be processed further to break it down into more useful products; in particular it may be mixed with heavier products and put through the refining process again (recycled).^[2]

• Pasadakis, Nikos; Karonis, Dimitrios; Mintza, Adrianna (1 August 2011). "Detailed compositional study of the Light Cycle Oil (LCO) solvent extraction products". Fuel Processing Technology. 92 (8): 1568–1573. Bibcode:2011FuPrT..92.1568P. doi:10.1016/j.fuproc.2011.03.023.

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