How many kilometers can an engine run without oil before cylinder scuffing occurs?

1 Answers
MacRyan
07/29/25 10:58pm
If a car idles without engine oil, it can run for about half an hour; if driven without oil, it can last at most 15-20 minutes. Hazards of running without oil: Prolonged operation without oil can cause irreversible damage to the engine and may even lead to complete engine failure. Causes of cylinder scuffing: Due to the high-speed operation of a car engine, the internal pistons and other metal components generate friction, with working temperatures reaching 400°C to 600°C. Without oil lubrication, dry friction occurs between parts, and without effective cooling, running the engine without oil for even a few minutes can cause overheating, leading to phenomena like bearing seizure and cylinder scuffing. Slightly longer operation can result in seized cylinders and total engine failure.
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