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under heavy boost (especially on higher powered competition engines) the crank pressure will push back up the drain with the same air/oil mixture that is seen on the side ports
All wires are colour coded to match the manual
a thick Viton o-ring seals the can
No Maintenance or Manual Draining Required
Radium AOS-R Air Oil Separator Kit (BRZ/FRS/86) E63 under heavy boost (especially onHigh powered modified 4U GSE and FA20A engines tend to generate excessive blow by oil and gasses. In these cases, an ordinary small catch can may quickly fill with oil and not be adequate. Like the Radium Engineering Dual Catch Can Kit, the AOS (Air Oil Separator) kit is responsible for keeping blow by oil and other pollutants out of the intake pipe, manifold, turbocharger, and intercooler during all engine loads. The main difference is that an AOS
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