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← TechnologyWhich accelerated wear results when internal combustion engine pistons experience thermal runaway near the top?
A)Lubricant film breakdown and scuffing✓
B)Increased connecting rod buckling stress
C)Reduced turbocharger compressor efficiency
D)Elevated crankshaft torsional vibration
💡 Explanation
Rapid temperature increase causes the lubricant to lose viscosity and vaporize therefore resulting in lubricant film breakdown and scuffing that increases wear, because the mechanism is loss of lubrication rather than con-rod stress, turbo inadequacy, or crankshaft resonance.
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