also: きかいゆ
machine oil
General term for lubricating oil used in machinery and engines.
工場では定期的に機械油を交換している。
At the factory, they regularly change the machine oil.
潤滑油 is a more technical term for lubricating oil, while 機械油 is a common, everyday word for machine oil.
Standard kanji spelling. The reading きかいゆ is more common than きかいあぶら.
Alternate reading; less common but still used.
Compound of 機械 (machine) and 油 (oil).