Take a tip from someone who's recently done it on a Mondeo- the filler hole is too small for some of the big oil syringes; I had to shave the end of mine in order for it to fit. Check before you drain & you'll swear less than I did.
I'd put myself between three & four on the scale- a mixture of what's in my best interest & how a decent society is in my ultimate interest. I wouldn't go so far as to embrace total altruism.
(ie a bit naughty sometimes rather than evil)