【冷卻液】如何選擇車輛發動機水箱冷卻液 防凍水箱冷卻液選購
1、選購正品
汽車配件市場上的防凍水箱冷卻液種類繁多,許多假冒偽劣產品混入其中,有些所謂的“防凍液”,是用乙醇和水混合后添加色素制成;沒有加任何防腐劑、阻垢劑等添加劑,沸點在90oC左右,腐蝕性較強,易導致發動機過熱現象的發生。分辨防凍液真偽的簡單方法是:優質防凍水箱冷卻液顏色醒目、清亮透明和無異味;用燒杯加熱防凍水箱冷卻液,用溫度計測量其沸點,凡沸點不足100oC的為劣品。冷卻液十大品牌
2、牌號選擇
防凍(dong)(dong)(dong)水(shui)箱(xiang)冷卻液(ye)(ye)(ye)的(de)牌(pai)(pai)號(hao)(hao)一般為其冰點(dian)值,選(xuan)(xuan)用(yong)(yong)時應(ying)結合使用(yong)(yong)地區和(he)季節確定,原則上(shang)加水(shui)稀釋(shi)液(ye)(ye)(ye)的(de)冰點(dian)值應(ying)低于所(suo)在地區最低氣溫10oC左右。不(bu)同地區的(de)選(xuan)(xuan)購(gou)參考值有所(suo)區別,長(chang)江以(yi)南地區可(ke)全(quan)年選(xuan)(xuan)用(yong)(yong)牌(pai)(pai)號(hao)(hao)為-25號(hao)(hao)的(de)防凍(dong)(dong)(dong)液(ye)(ye)(ye),如(ru)長(chang)城(cheng)牌(pai)(pai)多效(xiao)防凍(dong)(dong)(dong)液(ye)(ye)(ye)FD-1;一些地區還(huan)可(ke)選(xuan)(xuan)用(yong)(yong)冰點(dian)值為-15oC的(de)水(shui)箱(xiang)冷卻液(ye)(ye)(ye);長(chang)江以(yi)北(bei)地區、東北(bei)地區和(he)西北(bei)地區應(ying)選(xuan)(xuan)用(yong)(yong)為-35~-50號(hao)(hao)的(de)防凍(dong)(dong)(dong)液(ye)(ye)(ye),如(ru)長(chang)城(cheng)牌(pai)(pai)多效(xiao)防凍(dong)(dong)(dong)液(ye)(ye)(ye)FD-2、FD-2B、FD-2A、FD-3。注意,不(bu)同廠家、不(bu)同牌(pai)(pai)號(hao)(hao)的(de)防凍(dong)(dong)(dong)液(ye)(ye)(ye)不(bu)能混合使用(yong)(yong)。
3、加水稀釋
為了便(bian)于運(yun)輸與(yu)儲藏(zang),有(you)些防凍水(shui)(shui)箱冷(leng)卻液(ye)加工成濃縮液(ye)狀。使(shi)(shi)(shi)用(yong)(yong)時(shi)(shi)必須加水(shui)(shui)稀釋(shi),才能(neng)取得(de)最(zui)佳防凍效果(guo)。最(zui)好(hao)使(shi)(shi)(shi)用(yong)(yong)去離子(zi)水(shui)(shui)或(huo)(huo)蒸餾水(shui)(shui)稀釋(shi),不(bu)得(de)已時(shi)(shi)也可使(shi)(shi)(shi)用(yong)(yong)冷(leng)卻后的(de)(de)開水(shui)(shui)稀釋(shi),切不(bu)可使(shi)(shi)(shi)用(yong)(yong)自來水(shui)(shui)、地(di)下水(shui)(shui)或(huo)(huo)地(di)表水(shui)(shui)稀釋(shi)。否則,易(yi)導致水(shui)(shui)垢的(de)(de)產生或(huo)(huo)加重對(dui)冷(leng)卻系統(tong)的(de)(de)腐蝕作用(yong)(yong)。加水(shui)(shui)稀釋(shi)的(de)(de)比例,應依(yi)據(ju)防凍水(shui)(shui)箱冷(leng)卻液(ye)外包裝(zhuang)上的(de)(de)使(shi)(shi)(shi)用(yong)(yong)說明,結合使(shi)(shi)(shi)用(yong)(yong)地(di)區(qu)和季節確(que)定。