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Oil Catch Cans & Breather Tanks

Oil catch cans and breather tanks look similar and do similar jobs, but they serve different purposes.

Oil Catch Cans

Normally, the PCV (positive crankcase ventilation)...

Oil catch cans and breather tanks look similar and do similar jobs, but they serve different purposes.

Oil Catch Cans

Normally, the PCV (positive crankcase ventilation) valve uses intake vacuum to relieve the pressure inside your crankcase, but that can result in oil mist and other blow-by contaminants building up on the valve and pistons, especially in direct-injection engines. An oil catch can (sometimes called an air/oil separator) is installed between the PCV valve and the intake, where it removes contaminants and allows only clean air to return to the intake manifold. Some have a reservoir that needs to be drained...

Oil catch cans and breather tanks look similar and do similar jobs, but they serve different purposes.

Oil Catch Cans

Normally, the PCV (positive crankcase ventilation) valve uses intake vacuum to relieve the pressure inside your crankcase, but that can result in oil mist and other blow-by contaminants building up on the valve and pistons, especially in direct-injection engines. An oil catch can (sometimes called an air/oil separator) is installed between the PCV valve and the intake, where it removes contaminants and allows only clean air to return to the intake manifold. Some have a reservoir that needs to be drained regularly, while others are plumbed to return the oil to the crankcase.

Breather Tanks

In forced induction and racing applications, the build-up of crankcase pressure can be much greater, so a breather tank is designed to vent that excess pressure into the atmosphere. They capture some blow-by with a catch can and air filter, and they may have an oil return. Importantly, breather tanks may not meet local emissions standards.

Top Brands

These devices are easy insurance for your high performance engine, and some builders use both a catch can and a breather tank. Summit Racing Equipment carries catch cans from trusted brands like Moroso, Mishimoto, Canton Racing, Ford Performance, JLT Performance, and many more.

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Mishimoto Oil Catch Cans

Over time, harmful oil will build up inside of the turbocharger, intake manifold, intercooler, and piping. These Mishimoto oil catch cans are designed to help prevent this from happening. By sending the extra oil to the cans, it will stay out of the pressured turbo plumbing, which can lead to couplers coming off under boost. They will also make sure that oil vapors stay out of the intake system, which will help combustion temperatures and reduce overall efficiency.

3.64 out of 5 stars ( 22 )

$127.95

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$482.95

APR Catch Cans

APR oil catch cans are able to increase performance. They trap excessive crankcase oil vapors and gunk, eliminate possible performance-robbing boost leaks, and will reduce airflow-restricting carbon buildup, octane-lowering oil vapors, and oil pooling within the intake tract. APR oil catch cans are simple modifications to install, drain in seconds with the flick of a knob, and recommended at all stages of performance.

Not Yet Reviewed

$374.95

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$749.95

Steeda Oil Separators

Steeda oil separators reduce detonation, oil burning, and deposits on intake valves by removing oil drawn through the PCV system before it can contaminate the intake charge. Excess crankcase pressure (blow-by) is vented from the crankcase through the PCV system, where it is drawn into the intake manifold and returned to the engine to be burned. High-rpm, turbo and supercharged, nitrous-boosted, and high-mileage engines often draw excessive amounts of oil into the engine through the PCV system. Steeda oil separators are offered in a variety of configurations and a choice of materials. Each one plugs into the PCV hose between the PCV valve and the intake manifold and removes aerated oil from the re-circulated air and collects it so that it can be drained and recycled. They are fully sealed to ensure against vacuum leaks, and are simple to service.

3.5 out of 5 stars ( 2 )

$89.95

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$189.95

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