DieselPower said:
There's no uncertainty about CJ-4, it's far superior to CI-4/CI-4+. It's the largest leap in oil quality and standards in diesel engine oil ever.
Well I'm glad to hear that. I respect and appreciate your advice on these forums. My concern was partly from reading Shell's data sheet on CJ-4 15W-40 indicating that oil change intervals must be shortened if non-ULSD fuel is used. I don't seek out non-ULSD, but it is still sold in my area and may end up in the tank of our truck or tractor (neither has a DPF and the truck is 2006 M). Any thoughts on this? I'm pasting some info below copied right from Shell's data sheet - most worrisome to me is the statement that it is suitable "where fuel sulfur levels are below 500ppm". I'm not likely to find any fuel above 500ppm, but this caution had me worried.
• Heavy-duty diesel engines in all types of over-the-road service, including the latest emission controlled engines with EGR and diesel particulate filters using Ultra-Low Sulfur Diesel fuel (<15 ppm sulfur) (ULSD) and Low Sulfur Diesel (LSD).
• Suitable for diesel powered equipment including those powered by Caterpillar, Cummins, John Deere, Detroit Diesel, Mack, Mercedes-Benz, International, and Volvo engines in all types of service where fuel sulfur levels are below 500 ppm.
• Off-highway applications where a premium quality engine oil is desired, such as construction, mining, logging and agricultural service where fuel sulfur levels are below 500 ppm.
• Hard working diesel and gasoline engines,engines used in pick-up trucks, sport-utility vehicles (SUVs), and mini-vans.
• Suitable for use as a top-off oil in virtually all diesel engine applications.
• Always follow the engine manufacturers’ recommendations for motor oil performance, viscosity grade and oil change interval as these may vary depending on ambient temperature, fuel sulfur composition (LSD or ULSD) and vehicle model year.