The Mopar Performance Slant-6 manual was full of wrong info and poor recommendations back when it was new, decades ago, and aimed primarily at selling Mopar Performance items—many of which were no different to stock parts. The book has aged downward from there.
I like Doug's book. I have a copy. It's full of information that most everybody already knows, but it's really nice to have it all in one book. I scan through it often.
