Lol I once accidentally spilled about 1/2 cup in the marina when changing the oil in my outboard
. The water
was dead calm. I was amazed just how far that small amount of oil spread itself out, all the while I had visions of $$$$$ fines for polluting. The wife started flinging some dish washing
detergent around the spill and it dissipated the oil almost instantly. So yes, I assume used motor
oil would indeed work great and dish washing
detergent not so much (it mixes with the water).