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What are the benefits of an oil catch can?
Over the past year, I’ve been picking up home car repair, and some friends who also do this as a hobby told me I should look into getting an oil catch can. What does an oil catch can do? And what are the oil catch can’s benefits? Are they safe to use?
Matt Terzi · Updated on
Reviewed by Shannon Martin, Licensed Insurance Agent.
We always love hearing about people picking up DIY car repairs. As you know, it’s a fun hobby. Messy at times, but super fun! The benefits of having an oil catch can include easy removal and a neater clean-up process—unfortunately, though, they’re also illegal in many states.
In a direct-injection engine, the intake manifold gets grubby over time. Oil, carbon, and other gunk get sprayed in when pressure from the combustion chamber escapes the piston rings. This leaves your intake manifold in need of occasional cleaning.
Over time, that build-up in your intake manifold can lead to noticeable issues like reduced horsepower, a loss of fuel efficiency, and even engine misfires if the issue gets too serious. The oil catch can is installed along a hose between the crankcase and the intake manifold to prevent most, but not all, of this messiness.
As you can imagine, the oil catch can is way easier to remove and clean than an intake manifold. So why aren’t we seeing these devices factory-installed on every car with a direct injection engine? They’re illegal in many states due to anti-smog laws. It’s also worth noting that installing an oil catch can might void your engine’s warranty.
If oil catch cans are legal where you live, prices vary wildly. Cheap, small cans that need frequent cleaning cost as little as $30. Larger ones with better filtration can cost upwards of $300 or even more.
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