Can the RAM Cummins Diesel be used for local driving

Driving the RAM Cummins EGR/DPF equipped truck for local use. Is this bad for the engine. Will it gunk up my engine. Should I only use it for highway or towing? The answer is in this video.

• #autos_vehicles
• #ram_cummins
• #cummins_egr
• #cummins_dpf
• #ram_67_cummins_for_local_use