The superior coolant heated design ensures that the entire can is perfused by heat so condensation won't form in the oil you separate.which is important because you want the oil to be as pristine as possible going back into the engine!Ģ.Huge breather port to slow the vapors even more inside the can.Swirl pot design for slowing internal velocity.No vacuum source allowing for slower movement of oil vapors through the can for greater separation.Through painstaking testing and poring over the breathing characteristics of the EJ25, this is what they come up with. This is the main idiosyncrasy of IAG's design. Better oil separation than its competitors. The rather unassuming, plebian exterior of the IAG AOS belies the engineered intricacies of its internal guts:ġ.

I mean why else would IAG bother even releasing an AOS with a market already inundated with AOS/catch cans? There are certainly products out there have do fulfill the above criteria, but as I will go into, there are features of the IAG AOS that perches it atop the food chain.

Aig air oil separator review