break-in period
When you get a brand‑new car, the engine needs some time to settle. During this first few hundred miles you should avoid hard driving so the parts can get used correctly.
The break-in period is the initial phase after a new engine or transmission is first used, during which it should be run gently to allow components to wear in properly.
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"[1507.8s] and I assume it's the same for the Explorer, [1510.3s] it says for the first 500 to 1,000 miles, [1513.4s] don't drive at sustained high speeds. [1532.4s] So whatever it is, you're..."
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"I had it overhauled and then about, I'd say, 1,800 miles into the break-in period it started overheating."
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"If you guys rebuilt the rear end, you know, that's got to be broken in. The clutch got to be broken in. Just look at the transmit, the clutch and the transmission because..."
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