[JCRhea]

Originally Posted by wavsine

Most catch cans are worthless. Oil vapor is the enemy of intake valves in a DI engine and most of the catch cans on the market target liquid oil. There are some exceptions, such as the Mann Provent that has a replaceable filter element.

My advce is to run a high quality synthetic oil with a low NOACK that minimizes oil vapor in the engine. An occasional "Italian tuneup" might also help. (Keep the revs up above 3k on the highway for 20 minutes) This will get the intake valves nice and hot which combined with high intake velocities will help burn off light carbon deposits on the intake valves.

Thanks.