Besides using different fuels, what separates diesel engines from conventional engines is the types of oil both require to function properly and prevent damage. Since diesel engines are larger on ...

“We got rid of the sulfuric acid,” notes Granger. “The new engines run at very low soot levels.” The newest threat is now oil oxidation. “As the oil is exposed to higher ...

There's a lot of information on the packaging for your engine's motor oil, but the S designation may be one of the most ...