Pour some dawn on it, scrub a bit, then hose off. Will clean it spotless. I use it in heating and cooling when guys spill the oil out of there natural gas piping machines. That stuff is way worse than motor oil and dawn cleans it right up. I have tried on motor oil as well
Fermenters: beer and cider
Bottled: lots of beer and cider :)
"BEER....The cause of, and solution too, all of life's problems"