oil sump

engine part

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Last updated

July 1, 2026

Quick Summary

The oil sump, also known as an oil pan, is a crucial component of an internal combustion engine. It serves as the reservoir for lubricating oil at the bottom of the engine's crankcase.1

The lubrication system relies on the oil sump to supply oil. A pump draws oil from the sump, passes it through a filter, and then delivers it under pressure through passages in the engine. This oil is essential for reducing friction between moving parts by creating a film between them, and it also plays a role in cooling the engine.2

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gasoline engine
Lubrication system
…system is fed by the oil sump that forms the lower enclosure of the engine. Oil is taken from the sump by a pump, usually of the gear type, and is passed through a filter and delivered under pressure to a system of passages or channels drilled through the engine.…
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…system is fed by the oil sump that forms the lower enclosure of the engine. Oil is taken from the sump by a pump, usually of the gear type, and is passed through a filter and delivered under pressure to a system of passages or channels drilled through the engine.…
Read More