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Old 05-03-2019, 01:45 PM   #1
Scooby Newbie
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Member#: 483276
Join Date: Mar 2018
Default Crawford V3 AOS Review for the STI

Here's my review of the Crawford V3 AOS.

In summary: me no likey for track use because it does not separate oil out of the valve cover breathers. This is where a lot of oil comes out of the engine when you track the car because of the G forces and these lines being under vacuum.

At a recent track event I smoked up the paddock as oil pooled in my intercooler and was burned off.

This happened once before when I had no AOS and the catch can was full after a track session.

So even with the Crawford V3 AOS installed I have had to reinstall my catch can.

Their V2 AOS does intercept the oil from the valve cover breathers so this newer version isn't really an upgrade at all. I feel deceived.
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