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Which outcome occurs when a turbocharged gasoline engine experiences fuel dilution of engine oil?

A)Increased bearing wear from decreased viscosity
B)Decreased oil oxidation from fuel additives
C)Reduced piston ring blow-by from sealing
D)Improved pump efficiency from internal lubrication

💡 Explanation

When fuel dilutes engine oil, oil viscosity reduces because the fuel dissolves into the oil and lowers its cohesive strength, leading to decreased lubrication and increased wear. Therefore increased bearing wear results because of lower viscosity, rather than decreased oxidation, reduced blow-by, or improved pump efficiency which would require opposite oil property changes.

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