Hello all
I'm in the process of buying a 2015 Granite dump truck with a Cummings ISL9 engine and I don't know it this is a Medium Duty or Heavy Duty engine. I'll will be hauling 70k lbs on a daily basis. Can someone help me with this since there aren't a lot of information about it online. I feel this engine will be too small for what I will be doing. Thanks to all