The Morris Ring Free DD 40 Engine Oil is a high-quality, low-ash engine oil for 2-stroke diesel engines. This grade Engine Oil has good detergency/dispersancy properties, oxidation resistance, and thermal stability. The Ring Free DD 40 also prevents rust and corrosion in engine components. This oil is the result of a lot of research, development, and testing, and is especially good for Detroit Diesel Corporation engines.
The Morris Ring Free DD 40 Engine Oil is the perfect option for use in Commercial Vehicles Heavy-Duty Diesel Engines, Off-Highway Heavy-Duty Diesel Engines.