Joe Dude,
Just a note that I wasn't meaning to start a technical conversation in Doug's Project Journal, just commenting on something he may want to pay attention to on his truck (the Project Journal's are supposed to be about the original posters truck, not general tech conversations).
If you like, post your question in the
Engine Shop and folks can discuss that topic further.
As an alternative, we can get your post above moved over to the "Engine Shop" (with a little editing) to start your own conversation there.
Best Regards,
Dan