Perché un Motore di Camion È Più Debole di una Citycar — Ma Dura 10 Volte di Più

Why a Truck Engine Is Weaker Than a City Car — But Lasts 10 Times Longer It seems impossible: a truck engine produces less horsepower per liter than a small hatchback. It's "lazy," slow, underpowered. Yet it outlasts it ten times. The paradox has a precise explanation. The truth is that that engine doesn't die precisely because it never really works. It revs at 1,300 rpm when a car does 3,000, has a very low specific power, and huge, slow-moving components. Fewer revs, less heat, less friction: less wear. As someone wrote below, "it lasts because it doesn't rev." Add to this a world of oil, a giant sump, and filters that a car can't even dream of. A strong, nervous engine burns out quickly; a "weak," quiet one never runs out. Like if you have a vehicle that's over half a million mpg—and tell us in the comments. CHAPTERS: 0:00 The "weak" engine that always wins 1:15 Horsepower per liter: the surprising figure 3:00 Why low revs save everything 4:40 The oil pan you don't expect 6:10 Honda VTEC: the exception that confirms 7:25 Strong dies, lazy endures