I know lots like using the diesel oil but its probably not the best to use.
That's not necessarily true. That article talks about diesel engines running at lower speeds than gas engines, but that really wouldn't apply to a Light Truck Diesels, like currently used by Ford, RAM, and GM. Redline is typically in the 3000-3500 RPM range. A Stovebolt engine would be literally screaming at that speed, if it could even get there (at least in stock trim.)
Most diesel rated oils are now rated CK-4/SN, with the SN rating for gasoline engines. (S is for Spark Ignition) [on edit] Apparently none of Shell's Rotella diesel oils meet API SN specs.
But all of Chevron's DELO products are rated SN. Even Wal-Mart's store brand 15-40 diesel oil does.
Jerry, a sample size of one is fairly weak evidence to blame it on the oil. Did every engine you used that oil in fail? Scoring of bearings is likely from oil contamination rather than lubricant failure.
