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← ScienceWhich risk increases when elevated temperatures break intermolecular forces in lubricating oil?
A)Increased engine knocking and pre-ignition
B)Elevated viscosity reduces pump efficiency
C)Accelerated corrosion of engine components✓
D)Coolant pump cavitation and overheating
💡 Explanation
Accelerated corrosion occurs because elevated temperatures induce thermal degradation, weakening the Van der Waals forces that maintain the oil's protective molecular structure; therefore oxidation of engine parts increases, rather than viscosity changes or abnormal combusion conditions because of direct breakdown.
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