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← ScienceWhich result occurs when lubricating oil viscosity elevates excessively in an engine?
A)Increased engine wear and inefficiency✓
B)Improved fuel-air mixture combustion
C)Reduced oil supply system backpressure
D)Enhanced cooling system heat transfer
💡 Explanation
Elevated oil viscosity increases internal friction because Momentum Diffusion, thereby hindering flow and increasing engine wear. Therefore, engine performance and lubrication diminish, rather than improve, because the high-viscosity oil cannot properly reach critical components; this also increases internal friction.
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