Perché i Camionisti Coprono il Radiatore con il Cartone d'Inverno

Why Truck Drivers Cover Their Radiators With Cardboard in the Winter In winter, you might see a truck with a piece of cardboard tied in front of the front grille and immediately think it's a breakdown or a makeshift repair. It's actually one of the oldest and cleverest tricks on the road. A heavy diesel engine, paradoxically, struggles to warm up: with freezing air rushing into the radiator, the water stays too cold and the engine runs poorly, consumes more fuel, and never heats the cabin properly. By partially covering the radiator, the driver limits the cold air and lets the engine reach its ideal temperature. It sounds like sabotage, but it's actually thermodynamics applied with a piece of cardboard and two zip ties. CHAPTERS: 0:00 A cardboard in front of the truck? 1:20 The problem: the diesel that won't warm up 3:00 Why the cold hurts so much 4:40 The penny-pinching solution 6:30 Where the trick ends and the risk begins