I want to change my oil and put Royal Purple in. But I dont know what I have in there now. (It hasn't been changed since I bought it in Nov) Is there anything I should do to make sure I get all of the old oil out of the turbo? This sounds like a dumb question, and Im sure Im over thinking this. I work on Cadillacs and can take a 2000 and up DeVille apart with my eyes close but When it comes to my own car especially this one I want to be 100% positive of everything. Thanks
