Is Diesel Oil Different from Oil for Gas Engines?

Diesel oil and oil meant for gas engines serve the same purpose, keeping the engine lubricated. However, there are some differences in how the oil is formulated. Diesel oil usually has a higher viscosity than the oil used in gas engines. Also, quality diesel oil has anti-wear additives that keep your diesel engine from becoming prematurely worn. These additives are important for diesel engine maintenance, but using them with a gas engine would damage the catalytic converter. Catalytic converters in diesel engines are more robust and can handle the extra additives.