【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)水(shui)箱(xiang)冷(leng)卻(que)液(ye)的(de)牌(pai)號(hao)一般為其冰(bing)點值(zhi),選(xuan)用(yong)時(shi)應結合使(shi)用(yong)地(di)區(qu)(qu)(qu)(qu)和(he)季節確定,原則(ze)上(shang)加水(shui)稀釋液(ye)的(de)冰(bing)點值(zhi)應低于所在(zai)地(di)區(qu)(qu)(qu)(qu)最低氣溫10oC左右。不同(tong)地(di)區(qu)(qu)(qu)(qu)的(de)選(xuan)購(gou)參考值(zhi)有所區(qu)(qu)(qu)(qu)別,長江以南地(di)區(qu)(qu)(qu)(qu)可(ke)全年選(xuan)用(yong)牌(pai)號(hao)為-25號(hao)的(de)防凍(dong)(dong)液(ye),如(ru)長城(cheng)牌(pai)多效防凍(dong)(dong)液(ye)FD-1;一些地(di)區(qu)(qu)(qu)(qu)還可(ke)選(xuan)用(yong)冰(bing)點值(zhi)為-15oC的(de)水(shui)箱(xiang)冷(leng)卻(que)液(ye);長江以北(bei)地(di)區(qu)(qu)(qu)(qu)、東(dong)北(bei)地(di)區(qu)(qu)(qu)(qu)和(he)西北(bei)地(di)區(qu)(qu)(qu)(qu)應選(xuan)用(yong)為-35~-50號(hao)的(de)防凍(dong)(dong)液(ye),如(ru)長城(cheng)牌(pai)多效防凍(dong)(dong)液(ye)FD-2、FD-2B、FD-2A、FD-3。注意,不同(tong)廠家(jia)、不同(tong)牌(pai)號(hao)的(de)防凍(dong)(dong)液(ye)不能混(hun)合使(shi)用(yong)。
3、加水稀釋
為了(le)便于運輸與(yu)儲藏,有(you)些防(fang)(fang)凍水(shui)(shui)箱(xiang)冷(leng)卻液(ye)加工成(cheng)濃(nong)縮液(ye)狀。使(shi)(shi)用(yong)(yong)時(shi)(shi)必須(xu)加水(shui)(shui)稀釋(shi)(shi),才能取得最佳防(fang)(fang)凍效果。最好使(shi)(shi)用(yong)(yong)去離(li)子水(shui)(shui)或(huo)蒸(zheng)餾水(shui)(shui)稀釋(shi)(shi),不(bu)得已時(shi)(shi)也可使(shi)(shi)用(yong)(yong)冷(leng)卻后(hou)的(de)(de)開水(shui)(shui)稀釋(shi)(shi),切不(bu)可使(shi)(shi)用(yong)(yong)自來水(shui)(shui)、地下(xia)水(shui)(shui)或(huo)地表水(shui)(shui)稀釋(shi)(shi)。否則,易導致(zhi)水(shui)(shui)垢(gou)的(de)(de)產(chan)生或(huo)加重對冷(leng)卻系統的(de)(de)腐蝕作用(yong)(yong)。加水(shui)(shui)稀釋(shi)(shi)的(de)(de)比例,應依據防(fang)(fang)凍水(shui)(shui)箱(xiang)冷(leng)卻液(ye)外包裝上的(de)(de)使(shi)(shi)用(yong)(yong)說明,結合使(shi)(shi)用(yong)(yong)地區和季節確定。