i get what youre sayin bout not getting all the oil out, but they do it on $100k cars...it does make you wonder. and that they barely ever replace or rebuild engines compared to other car companys... they might do a body harness job that costs the customer $15k, but they barely replace engines..
Again they went from NOT having drain plugs to once again having drain plugs.
Why would they remove the drain plug and suck it from the top then a few years later go wait no we need to add it back.