The L9 is also fully EPA 2024 compliant, making it potentially the most future-proof engine on this list, with the exception of the Cummins X10 that we will talk about later — though the X10 isn't ...
In the world of semi-trucks, the engine under the hood often matters a whole lot more than the badge on the grill. In fact, most trucks across America are powered by one of just four engine ...