doesn't sound like a problem to me.

There is a coolant surrounding the engine which is circulated by a water pump to keep the engine block temperature even. When the engine is too hot, some of the hot coolant is allowed to enter into the radiator to release the heat; when the engine is cold, you need to warm up the engine as soon as possible by keeping the coolant only circulate around the engine without going out to the radiator. Coolant entering into radiator is controlled by a thermostat which supposedly only opens when the coolant temperature reaches the specific value. If your car can warm up quickly, and then the temp stays at the middle of the thermometer without keeps going up further, that means your cooling system is working fine.

In terms of one car warms up faster that the other, it might be due to the different design or just a difference in thermostat responding time. The short response time, the better.

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• 回复：doesn't sound like a problem to me. -Saphie- ♂ (25 bytes) () 03/08/2010 postreply 12:59:58