Which system supplies oil to the sump, cooler, and strainer?

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Multiple Choice

Which system supplies oil to the sump, cooler, and strainer?

The external lubrication system is the loop that carries oil from the sump to the cooler and to the strainer, then on to the engine’s lubrication paths and back to the sump. In this setup the cooler lowers oil temperature and the strainer removes debris before the oil continues to lubricate internal parts. Because these components—cooler and strainer—are outside the engine’s core bearing area, their oil supply is handled by the external portion of the lubrication system.

The external lubrication system is the loop that carries oil from the sump to the cooler and to the strainer, then on to the engine’s lubrication paths and back to the sump. In this setup the cooler lowers oil temperature and the strainer removes debris before the oil continues to lubricate internal parts. Because these components—cooler and strainer—are outside the engine’s core bearing area, their oil supply is handled by the external portion of the lubrication system.

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