1) Petroleum based lubricant
Found on
https://www.crosswordclues.com/clue/cycle-oil
In everyday life a light lubricating oil for lubricating bicycles and similar devices may be called cycle oil. In the petroleum industry cycle oil is an unwanted liquid residue produced when using catalytic cracking to convert heavy hydrocarbon fractions from earlier stages of refining into more valuable lighter products. Catalytic cracking produc...
Found on
http://en.wikipedia.org/wiki/Cycle_oil
No exact match found.
