Aircraft General Knowledgeeasy#391
Oil in a gas turbine engine is used for:
A
Combustion support
B
Fuel system priming
C
Lubrication, cooling, and cleaning of bearings and gears
CorrectD
Hydraulic actuation of thrust reversers
Explanation
Engine oil lubricates and cools bearings, accessory gearbox gears, and also carries away contaminants.
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