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Five functions of the oil in an engine lubrication system are?
- Reduce friction
- Provide cooling
- seal and cushion
- protect against corrosion
The resistance of an oil to flow is known as its ______.
Oil that flows freely has a _____ viscosity
the oil used in reciprocating engines has a relatively ____ viscosity.
The measure of the change in viscosity of oil with a given change in temperature is known as the _____ ____.
An engine lubricating oil whose viscosity changes very little for a given change in temperature has a _____ viscosity index.
The point at which a liquid will begin to give off ignitable vapors is known as the _____ point.
Aviation 80 engine oil has the same viscosity as SAE ____.
The use of straight mineral oil in an aircraft reciprocating engine is associated with what conditions?
- New/Overhauled Engines
- Older Engines
The lubricating properties of straight mineral oil _____ as good as those of ashless disperant oil
Synthetic lubricating oils are ____ viscosity oils
If incompatible oil has been added to a turbine engine, it is often necessary to ____ and ____ the oil system before refilling with the proper oil.
Turbine engine oils __ ___ use a standard identification system.
SAE numbers ____ ____ used to identify turbine oils.
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