What Does An Oil Separator Do?

Oil separators, also known as catch cans or oil catch cans, play a critical role in maintaining the performance and longevity of your vehicle's engine. At KOW Performance, we understand the importance of proper engine maintenance, which is why we offer high-quality oil separators as part of our aftermarket performance parts lineup. In this blog, we'll delve into what an oil separator does, how it works, and why it's essential for your vehicle.

What Does An Oil Separator Do?

1. Understanding the Function of an Oil Separator

An oil separator is a device designed to intercept and capture oil vapors that are present in the crankcase ventilation system of an internal combustion engine. As the engine operates, blow-by gases containing oil vapors are generated in the crankcase. These gases can contain oil mist, which, if left unaddressed, can lead to carbon buildup in the intake system, reduced engine performance, and increased emissions.

2. How an Oil Separator Works

Oil separators typically consist of a housing or canister with an inlet and outlet port, as well as internal baffles or filter media designed to capture oil droplets from the blow-by gases. As the blow-by gases pass through the oil separator, the oil droplets coalesce and adhere to the internal surfaces or filter media, allowing clean, oil-free air to exit the separator and return to the engine intake system.

3. Benefits of Using an Oil Separator

Using an oil separator offers several benefits for your vehicle, including:


  • Reduced Engine Deposits: By capturing oil vapors before they can enter the intake system, an oil separator helps prevent the formation of carbon deposits on intake valves, throttle bodies, and other critical engine components. This can lead to improved engine performance and fuel efficiency.
  • Extended Engine Life: By reducing the accumulation of carbon deposits and oil contamination in the engine, an oil separator can help prolong the life of internal engine components, such as piston rings, cylinder walls, and bearings.
  • Improved Performance: A cleaner intake system and reduced carbon buildup can result in smoother engine operation, increased power output, and more consistent performance, especially in high-performance or turbocharged applications.
  • Environmental Benefits: By capturing oil vapors and preventing them from being released into the atmosphere, an oil separator helps reduce harmful emissions and environmental pollution, making it an eco-friendly choice for vehicle owners.

4. Types of Oil Separators

There are several types of oil separators available on the market, including:


  • Basic Catch Cans: These simple devices typically consist of a canister with an inlet and outlet port, as well as internal baffles or filter media to capture oil droplets. Basic catch cans are easy to install and offer effective oil separation for most applications.
  • High-Performance Catch Cans: These advanced oil separators feature larger capacity canisters, more efficient baffles or filter media, and additional features such as drain valves or sight glasses for easy maintenance and monitoring. High-performance catch cans are ideal for high-horsepower or forced induction applications where oil contamination is a concern.

Enhance Your Engine Performance with an Oil Separator from KOW Performance

In conclusion, an oil separator is a vital component for maintaining the performance, efficiency, and longevity of your vehicle's engine. By capturing oil vapors and preventing them from contaminating the intake system, an oil separator helps reduce engine deposits, extend engine life, and improve overall performance. At KOW Performance, we offer a wide range of high-quality oil separators to suit your needs. Browse our selection today and experience the benefits of an oil separator for your vehicle!

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