Someone put this: http://barsproducts.com/catalog/view...ak-repair-4502 in my oil. Will this affect/hurt my van at all, and what can I do to help?

He is a mechanic friend and may have done this in a not-so-clear frame of mind. Am I safe? Is this a big deal? I repeat, he put this in the oil, not into the transmission fluid, and I am very scared that this is a big problem.