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← ScienceWhich outcome occurs when engine oil viscosity increases excessively?
A)Increased hydrodynamic lubrication effectiveness
B)Decreased heat transfer from components✓
C)Reduced oil pump cavitation potential
D)Enhanced fuel efficiency characteristics
💡 Explanation
Increased oil viscosity reduces its ability to flow and convect heat, resulting in decreased heat transfer because the increased resistance to flow inhibits the convective heat transfer mechanism. Therefore, components overheat rather than being adequately cooled, unlike options A, C, and D.
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