Yeah that stuff is amazing. I used to be a plumber and I repaired things with that stuff on occasion. I don't know if I would use it on an oil pan. Like one of the other listers said, there's got to be a gazillion 258 sixes around, shouldn't be that hard to find one that is all encrusted with oil and dirt but underneath is still pristine steel like from the factory, that's one good thing about leaky engines, they tend to preserve the exterior of the engine and other things too. Armand