Hey Opie sorry for the late reply

By "by the book" I meant he follows the factory specs to the "t". I think its great, and Im sure he does very good work. The only problem I have is that I get the impression that if you want to do something like run biodiesel or WVO etc. he's not too open to the idea because the factory doesn't really approve it, etc for the older engines. Its fine with me, he can run his shop any way he deem suitable. He definitely knows his stuff on the diesels.

Eric