oil

engine oil reservoir / engine oil tank

oil gauge / oil-gauge

air-oil shock strut

ammonium nitrate-fuel oil (ANFO)

A-oil

diluted oil

fuel oil barge (YO)

fuel-oil tank

gear-type oil pump

hydraulic oil

lubrication oil system

marketable oil

oil carrier

oil filter

oil pan

oil pump

oil slick

oil storage barge (YOS)

oil strainer

oil sump

oil tanker

oil well

oil-level gage

petroleum, oil, lubricants (POL)

tank farm (oil depot)

brake plate oil slinger

oil slinger

oil slinger gasket

timing gear oil slinger

oil circuit breaker

oil cooler bypass valve

oil passageway