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What does a pressure-relief valve do in an engine lubrication system?
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lubrication
Motor oil, a lubricant for automobile engines.
In an engine lubrication system, a spring-loaded pressure-relief valve is essential for maintaining the oil pressure at the proper level.1
Because the lubrication system delivers oil under pressure to critical components like crankshaft and camshaft bearings, the pressure must be carefully regulated to ensure consistent performance and prevent damage. The relief valve functions by allowing fluid to escape when the pressure becomes excessive, thereby protecting the system from over-pressurization.12