quote: Originally posted by Greaser: In my neck of the woods Pennzoil filters are Purolater clones...string around the element,by-pass valve,ADV an exact copy inside...cut both open
Which just shows to go you that you can't depend on the label or paint job on the outside to tell you who made your filter. Or a couple year old filter disection web page either. There seems to be a lot of filter source changing going around.