lubricating oil

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English

Noun

lubricating oil (plural lubricating oils)

  1. An oil for lubrication of engines and other components.
    • 1960 June, “Talking of Trains: New B.R. research laboratory”, in Trains Illustrated, page 329:
      Diesel maintenance schedules are benefiting from work done on the magnificent Hilger & Watts electronic spectrograph for oil analysis, which detects minute quantities of metals in samples of used lubricating oil; [...].

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