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← TechnologyWhich outcome occurs when small amounts of liquid fuel bypass piston rings in an internal combustion engine?
A)Increased oil dilution and blow-by✓
B)Reduced engine compression ratio slightly
C)Increased exhaust valve seat erosion
D)Premature catalytic converter deactivation occurs
💡 Explanation
Increased oil dilution and blow-by occurs because unburnt fuel contaminates the lubricant due to insufficient cylinder wall sealing via piston rings, degrading oil viscosity causing increased ‘blow-by’ pressure therefore, raising leakage as this oil is less effective at sealing, rather than compression loss itself.
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