Quote:
Originally Posted by Kimsey47
Which AOS are you using in your STI? I'm basically a daily driver that will bomb some mountain and valley roads so it looks like the grimmspeed should suit me well from what I've read up on.
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To actually be able to separate any air & oil in an AOS, IMO, you need a recirculating system that has an outer coolant jacket to keep temps up in the AOS itself. I have a Perrin but I know the IAG version is well liked now too. The Grimmspeed is an AOS only because they call it that, but it doesn't have any meaningful function. It's a mystery to me how a company that makes a lot of good products can make such a useless piece for such an essential engine protection mod.