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If you notice the presence of engine oil inside the radiator filler neck, the reason can be :

ADefective radiator pressure cap

BDamaged cylinder head gasket

CDefective thermostat valve

DDefective oil pump

Answer:

B. Damaged cylinder head gasket


Related Questions:

Which of the following is not a function of fuel injection system in the diesel engines?
ടർബോ ചാർജർ എഞ്ചിനിൽ ഉപയോഗിക്കുന്നത് എന്തിന്?
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