Because gimps on YouTube keep re-uploading the same videos under different titles. This particular channel is full of videos "stolen" from other channels...
I own a car with turbo diesel engine so I know what diesel power is like I've been changing clutch yesterday because the old one just couldn't handle that unbelievable power
These old merc diesel engines are awesome. Just listen how W124's 3.0TD engine sounds when you get rid of such useles thing as exhaust: http://www.youtube.com/watch?v=_uaYuWXT0Kg
It's very user friendly. When your engine gets f*ckd, you don't have to take the broken engine out to put a new one in, it jumps out by itself automaticaly