Petroleum has largely superseded other oils, and is still gaining ground, as a lubricant for machinery and railway rolling-stock, either alone or in admixture with fixed oils.
Refined sperm-oil is a most valuable lubricant for small and delicate machinery (see Oils).
She was also happy because she had someone to adore her: the adoration of others was a lubricant the wheels of her machine needed to make them run freely-- and Petya adored her.
Micaceous iron ore consists of delicate steel-grey scales of specular haematite, unctuous to the touch, used as a lubricant and also as a pigment.
Whale-oil is principally used in oiling wools for combing, in batching flax and other vegetable fibres, in currying and chamois leather-making, and as a lubricant for machinery.