1、轿车不需要加水。通常所说的加水是指加防冻液。汽车上使用的发动机是水冷发动机,水冷发动机依靠防冻液在发动机内循环散热。如果没有防冻液,发动机就会出现温度过高的情况,情况严重会损伤车辆性能。
2、防冻液的全称是防冻冷却液,是一种含有特殊添加剂的液体。最重要的是保护发动机,既能降低温度,又能合理控制温度,不会轻易变质。但需要注意的是,不能添加不同颜色和规格的防冻液,否则会发生化学反应,对发动机有一定的影响。

1, the car does not need to add water. What say normally adding water is to point to add antifreeze. The motor that uses on the car is water-cooling engine, antifreeze of water-cooling engine support comes loose circularly inside engine hot. If do not have antifreeze, engine passes high case with respect to meeting occurrence temperature, the condition can mar vehicle performance badly.
2, the full name of antifreeze is prevent frostbite cooling fluid, it is a kind of liquid that contains special additive. The most important is protective engine, can drop temperature already, temperature of can reasonable control, won't deteriorate easily. But those who need an attention is, cannot add the antifreeze of different color and norms, can produce chemical reaction otherwise, have certain effect to engine.