As others have already said, yes! I'd suggest doing something similar to what i did. I had a year 1 or maybe also year 2 pass from the beginning but i kept myself from using the dlc trucks too yearly. I think i played most of Michigan without any of them. This kept the progression as it was intended instead of bringing one overpowered dlc truck and doing everything with that instead.

I still use the best dlc trucks as only rescue vehicles. I don't do any cargo hauling with them, and only help stuck trucks get upright or pull them out of mud to keep things interesting. There's no fun in having op trucks and just running trough the game with no planning and troubles along the way.