I‘ve searched the web, I‘ve looked for it in pedia, in an encyclopedia, but I can‘t find anything indicating one way or the other. Does crude (natural subterranean petroleum deposits) have any magnetic properties at all? Does it have any special or notable reactions to magnetic fields? Could it, in any capacity, be used in the form of an insulating material for magnetic fields like lead? Any information or possibly links to such information would be appreciated.
Petroleum comes originally from ancient plants and animals -- LOTS of plants, generally in a swamp. So no, petroleum has no magnetic properties, because it contains no more than a mere trace of iron.
