Diesel Engineers Tore Down a Cummins — What They Found Shocked Ford

A team of diesel engineers tore down a Cummins 6.7L pulled from a wrecked highway tractor with 480,000 miles on it — and what they found inside changes the whole conversation around Cummins vs Powerstroke reliability. This video breaks down the real engineering differences between Cummins and Ford's Power Stroke diesel platforms — block material, fuel injector design, and why fleet buyers keep choosing one over the other at high mileage. No hype, just what the metal actually shows. If you're deciding between a Cummins, a Power Stroke, or a Duramax for towing, daily driving, or fleet use, this breakdown covers exactly what to check before you buy either one used — including the one maintenance habit that separates a 500,000-mile engine from a 200,000-mile rebuild. Subscribe for more honest diesel engine breakdowns, teardown analysis, and buyer's guides — new videos weekly. cummins vs powerstroke reliability, 6.7 cummins vs 6.7 powerstroke, diesel engine teardown 2026, best diesel truck engine, cummins engine longevity, diesel engine buying guide, CP4 pump failurecummins vs powerstroke, 6.7 cummins, 6.7 powerstroke, diesel engine teardown, cummins reliability, ford power stroke reliability, diesel truck engines, cp4 injection pump, diesel engine comparison, best diesel engine, cummins 500000 miles, diesel truck maintenance, ram cummins, ford super duty diesel, diesel engine rebuild, fleet truck engines, duramax vs cummins vs powerstroke, used diesel truck buying guide, diesel engine longevity, heavy duty truck engines #Cummins #PowerStroke #DieselTrucks