I have some oil in my intake. I'm assuming it's from my cdr valve going bad. I ordered a new cdr valve and connecting rubber pieces. Now before I put the new stuff in and run the beast is there a way I should try and clean the oil out of my intake manifold. Also I've read about cleaning the cdr valve every second oil change, but the old fourm I read never specify what to clean it with. They just state thinge like don't use gas or diesel because there's a rubber diaphragm and that will destroy it. So if anyone knows it would be a great help so I don't have to spend an extra 100$ every other oil change.