As I recall, and I may easily be wrong, Mobile 1 is one of those expensive synthetic oils. These often contain ingredients similar to what you find in Militec-1
BTW, I am told that the FBI likes Miltec-1 as a gun oil and was buying it in big drums. The problem: The agents were stealing it (don't get me started on this) and putting it in their personal cars. The results: measurable increases in fuel economy, noticable improvements in accelleration and performance, and quiter, smoother-running engines. Of course, we are talking here about a $2000 oil change.