When draining 15 qts of oil out of a warm engine on a 100 degree day, remember to open the "vent" cap on your drain pan. Because man, it REALLY comes on out of there.
I intended to grab a pic of the aftermath, but Area Woman MkII was on the scene with a bag of oil dry like *snaps fingers* that.
Piece of cake, really, besides the incredible expense and cleanup time.