The label mentions fatty acid esters and some other stuff I don't remember (I borrow the can my mechanic bought six or seven years ago when I need some). It's really almost a dry lubricant, and I suspect using anything else is a bad idea.
1972 220D ?? miles
1988 300E 200,012
1987 300D Turbo killed 9/25/07, 275,000 miles
1985 Volvo 740 GLE Turobodiesel 218,000
1972 280 SE 4.5 165, 000 - It runs!