Veterinary Wisdom: Nolvasan To The Rescue By Equisearch | October 23, 2013 | 1 minute read If you’re left with an “oil slick” from spilled mineral oil, try dumping some Nolvasan on it (you should have some on hand anyway). It’ll cut right through, removing that slippery spot. What did you think of this article? Submit Rating Thank you for your feedback!