wife put stop leak in oil

If it was an oil stop leak product, the only way it could do that much harm is if the amount was excessive. If a cooling system stop leak, many of those contain fibers that could clog oil galleys and get into bearings, stopping the engine from turning. You might be able to rectify this with a hard flush, but it's likely you're looking at taking the engine apart to get that stuff out of bearings.

You can try a can of engine (oil) flush but I think Ed is right. You're looking at a major repair! Sorry! Jim