I have a feeling I may get the "Searh the Forum" attack But I performed a search and can't find the information I was looking for. I am trying to save some time from having to crawl under the truck to figure out the Diameter of the Hose needed so I can extend my breathers. Also, is there anything to be aware of by performing this? Also, in one of the threads someone mentioned adding a Oil Breather filter ma thingy? What is that?