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Modern engines meet emissions requirements by routing crankcase vapors back through the intake. Those vapors often carry oil mist, fuel residue, and condensation. Over time, that mix can leave an oily film in intake plumbing, coat throttle bodies and sensors, and contribute to intake-valve deposits on direct-injection platforms. A J&L Oil Separator adds a filtration step that keeps much of that contamination out of the intake stream. The valu...

This Black Friday, make a 15-minute upgrade your engine will actually benefit from. Install a J&L oil separator to capture oil mist from the PCV system before it coats your intake and valves. In one short session, you can help protect your vehicle's engine fuel economy and long-term reliability on your car, truck, or performance vehicle. What is an oil separator, and why are they important? Modern engines generate blow-by, the combustion gase...