No chance of metallic oil contamination and I am lucky enough to have jug of it lying around, I got from a Nuke project I worked on in Calif. awhile back. You only need such a light coat applied and it's basically encapsulated 'tween the case and cover, so I wouldn't worry about using the regular grade of Anti Seize, if that's all I could get, just do not slop it on, as a light film rubbed into the outboard side of the paper gasket will keep it from sticking and tearing, upon a future dis assembly. There are several grades of A. Seize available, if you can locate one of the lube oil or bearing friendly types, I would recommend to use it, that's all.