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Your analogy doesn't hold water. Pouring hot water on your car is a terrible analogy.. A better one would be if you store your car in a heated garage so it is heated all the way through, not just on the surface. In that case it would definitely make a difference, just like raising the internal temperature of an electronic component no matter how it is done will make a difference.
This is done all of the time in precision test equipment. Temperature sensitive components that would affect the precision of the instrument if their temperature was allowed to drift, for instance the components that determine the frequency of a precision oscillator, are kept in little "ovens" inside the device where their temperature is precisely controlled. They are typically heated since it is usually easier to keep something warmer than the ambient temperature than it is to keep it cooler.
Since all Elizabeth can do is claim "you missed my point" and can't offer any reasonable explanation of why heating something up externally or internally will make a difference, I'll consider the case closed.
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