Know nothing about this.Any DI engine can only benefit from a catch can. I'll probably end up adding one, the RS got that treatment.
Direct Injected engines have fuel sprayed directly into the combustion chamber. They don't have the luxury of the fuel washing over the intake valves to keep them clean. Over time they can build up carbon deposits and gum up. The catch can (air oil separator) grabs on to the oil and holds it in the can while still allowing airflow.Know nothing about this.
Can someone explain?
I'd over check at first, at least once a month until you get a good idea of how much oil your catching. Now I only check my RS every oil change as there's only a few ounces in there.How often do you guys drain them? Every oil change or just when their full?