"Truck Motor????"""
....Wise guy!
I've also heard that the amount of zinc has been reduced in Rotella, but it was my understanding that it is still higher than most other brands. Yes, it does sound a little strange to put diesel oil in our cars, but since those engines generally see harder service (and are expected to last a LOT longer) oils with better additive packages were developed. The diesel oils also have an "anti-sooting" additive which our cars don't need, but it doesn't hurt anything for it to be there, IT's a "no care".
Verne