00:00Diesel engines create over 2,000 pounds per square inch during combustion.
00:04If this surface warps by just 0.003 inches, the head gasket fails.
00:09That means coolant leaks into cylinders, or worse, combustion gases, escape into the cooling system.
00:14So this machine shaves down the metal until it's perfectly flat,
00:17ensuring a tight seal that can handle all that pressure.
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