Join Date: Mar 2019
Location: Central Ohio
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I've been monitoring the total oil captured by the catch can, and I'm finally just about ready for the 45K mile oil change. Over the life of this oil change interval (about 7K), the total oil captured in the catch can amounts to about 2.5 oz. So, not a lot.
What it does catch is dark, and has an acrid smell that's worse than typical used oil smell. I suspect some of the crankcase VOC's are getting picked up by the captured oil.
Before the oil change, I'll clean the intake valves with the CRC GDI intake valve cleaner, then see if I can observe a reduction in the deposits using the video borescope. Then I'll have a better baseline for evaluating how much of an impact the catch can has on intake valve fouling.