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New trucks and performance cars leave the factory with a clean intake and sealed PCV system. As mileage builds, blow-by sends oil mist and fuel vapors back through the intake, slowly dragging performance down. An oil separator for vehicle protection is a simple way to control that buildup, but many owners hesitate due to warranty and emissions rules. A J&L Oil Separator is built around those concerns. Each kit is closed-loop, uses OEM-style h...

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...

If you spent time around trucks in recent years, you’ve seen the rise of catch cans. They’re not a vanity add-on. A well-designed oil separator keeps oily blow-by out of the intake path, which helps modern engines run cleaner for longer—especially on tuned or hard-worked trucks. Why do performance trucks need an oil catch can? All engines create “blow-by”—combustion gases that slip past the rings and into the c...