Re: Fiat 500
"You can guarantee that the owners have not the slightest clue about oils so just pick up 20w50 and go with it (which to paraphrase Robin Williams is "great when you're in a landcrab, but not so great when you've got VVTi") or (and my neighbour actually killed one doing this) top it up to the valve gear."
So, you don't like the Fiat 500 because someone once didn't know how to do an oil change?
Maybe there ought to be warnings. Just saying....