I just recently purchased my first inboard diesel engine with my Hunter 27(77) sailboat. I would like to know the best way to change the oil. I heardsomewhere that you should pump the oil out through the dip stick....well itsthe size I can't figure out. How the heck do you get a tube down such a smallhole...or do I just find a drain plug below and go for it. I am in dry dock right now and don't care if I make a mess.Thanks,