What oil does a 1979 Lincoln Continental use?

A 1979 Lincoln Continental typically requires a high-quality motor oil with a viscosity of 10W-40 or 20W-50, depending on the climate and driving conditions. It's advisable to use a conventional or synthetic blend oil that meets the API (American Petroleum Institute) standards of that time, specifically API SE or higher. Always check the owner's manual for any specific recommendations or requirements.