I need some help understanding something hopefully someone can help.I noticed the other day when I removed my aem air filter to blow out some of the dirt and bugs that a small puddle of oil was sitting there at the end of my intake tube. First thought was man I need a catch can I dnt want all this oil in my intake after a fresh build.so I decided to do some reading and according to some threads the air goes from the intake to the valve cover.I always thought it was vice versa because there is no other explanation for the oil in my intake.I need someone to please help clear this to me n is a catch can a good idea