Provent 200 catch can, in an isuzu dmax engine

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Automotive enthusiasts are always looking for ways to improve the performance and longevity of their vehicles. One relatively new addition to the list of performance-enhancing modifications is the installation of a catch can. But the question is, do catch cans actually work? In this blog post, we will explore what catch cans are, how they work, and whether they live up to their promise of improving engine performance.

What are Catch Cans?

Catch cans, also known as oil catch cans or air-oil separators, are devices installed in the engine’s ventilation system to catch the oil vapour and other contaminants that can accumulate in the engine. They are typically made of lightweight materials and are installed between the engine’s crankcase and the intake manifold.

How do Catch Cans Work?

When the engine runs, it produces pressure that pushes air and vapour through the ventilation system. These vapours contain oil particles, soot, and other contaminants that can accumulate in the engine and reduce performance. Catch cans work by intercepting these vapours and separating the oil particles and contaminants from the air before it enters the intake manifold.

Do Catch Cans Actually Work?

The short answer is yes, catch cans do work. Catch cans can reduce buildup in the engine by intercepting the oil particles and other contaminants. This can lead to improved engine performance, better fuel economy, and increased engine longevity. Catch cans can also help reduce the emissions produced by the engine, as the contaminants captured by the catch can be prevented from entering the atmosphere.

However, the effectiveness of catch cans can vary depending on the type of engine, driving conditions, and the quality of the catch can itself. Some catch cans may not be able to capture all the oil particles and contaminants, while others may restrict airflow. Therefore, choosing a catch can compatible with your engine and has been tested for effectiveness is essential.


Catch cans can be an effective addition to your engine’s ventilation system, improving performance, fuel economy, and longevity. However, choosing a high-quality catch can that is compatible with your engine and has been tested for effectiveness is essential. If you are considering installing a catch, consult a knowledgeable automotive expert to ensure that you make the best choice for your vehicle.

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