Correct answer
Reduce wear and help prevent seizure.
Reducing friction and wear helps prevent moving parts from seizing. Increasing wear or bringing the engine to boiling point are not its purposes. Lubrication does not guarantee freedom from faults: the specified oil, correct level and maintenance are required. If an oil-pressure warning appears, follow the handbook and stop safely when necessary.
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Increase wear on the parts.
Reduce wear and help prevent seizure.
Heat the engine to boiling point.
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