Blackestate - I've looked at the MC 15w40 too. But did you notice it's not MB 228 approved?

SAE 15W-40 Super Duty Diesel Motor Oil

__________________
1993 W124 300D 2.5L Turbo, OM602.962
2000 Chevrolet Cavalier, 2.4L DOHC
2002 Ford Explorer, 4.0L SOHC
2005 Toyota Prius, 1.5L

http://www.fuelly.com/sig-us/40601.png