Car innards these days are so different from they used to be that I suspect many of the old rules no longer apply.

My brother was a mechanic and over the years he had to switch from being a 'general practitioner' to the specialty of carburetion. I kept my 64 Mustang for years - old style engine - and I remember the first time my brother popped the hood to work on my car he rubbed his hands together and exclaimed, Oh, this is going to be fun!