Moroso installed a clear chamber after the air oil separator on a supercharged LT4 to video how effective the separator is. You can see in the video that the chamber only fills with a little bit of light smoke at the top of each gear, no oil mist at all and no spitting. The PCV vent gasses are almost totally clean and certainly no sludge or liquid oil or detonation promoting oil mist will get into your intake. The supercharged LT4 makes a lot more blowby than our NA LT1 does any day so on our car the air oil separator will work even better than the one in the video. After a day at the track, our car hardly had anything in the tank so the drain interval suggest by Moroso is probably totally acceptable. We can heartily recommend this part to anyone who owns a C7!