An oil catch can is an aftermarket device installed in a vehicle's crankcase ventilation system to capture and collect oil vapors and other contaminants before they can enter the intake manifold.
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This helps prevent the build-up of carbon deposits on the intake valves and improves overall engine performance and longevity. By trapping these oil vapors, the catch can also reduces the likelihood of oil sludge forming within the engine, which can lead to decreased efficiency and potential engine damage. Installation of an oil catch can is a common modification for those

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