Waterproof Cooling Fan effect and ambient temperature

"Waterproof Cooling Fan" running smoothly at high speed, so many people assume that the cooling fan operating results independent of the ambient temperature, in fact, know who produce this error is not running over the harsh conditions, low temperature environments computer , once the ice and snow in low temperature using the computer, even if it is just to buy a new CPU cooling fan, will not take long, you can feel "Waterproof Cooling Fan" poor operating results, demonstrated by the external phenomenon is a lot of noise during operation, at just the moment you start your computer rotating poor, why is there such a phenomenon? The original in low temperature environments, smear on oil cooling fan shaft failure, resulting in "Waterproof Cooling Fan" rotate very difficult, serious in the early start, they would have issued a lot of noise vibration, so in order to ensure cooling fan has good operating results, we note that in addition to the use of ambient temperature, but also especially to the fans filling antifreeze lubricants to ensure that the CPU cooling fan can run properly at low temperatures.