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Diesel catch can or vent it to the atmosphere?

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Hi,

I have turbo diesel Toyoya Hilux 2020 (Not sold in the US), and I'm thinking about installing an oil catch can, the thing is where I live there are no environmental laws about these fumes. 

In terms of performance should I get a catch can or make the PCV valve vent it to straight to the atmosphere? Blushed  

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Doing oil catch can it's a lot less messy

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PCV systems often have a a breather and a valve which can suck. This helps scavenge moisture, blowby, and other gases out.

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