Both: grease should go on parts that slide; oil other areas. Lightly.
That statement has always confused me...at the Macro/microscopic level, all friction points seem to be, "slide". That is, metal sliding against metal.
Sometimes you get what you pay for, sometimes you only pay more for what you get.
Three shots are not a "group"...they are a "few".
If the Bible is the literal, infallible, unerring word of God...where are all those witches I am supposed to kill?