在換潤(run)滑(hua)油(you)(you)前一定要采(cai)用(yong)有效(xiao)的(de)清凈分散(san)劑進(jin)行清洗。在發(fa)動(dong)(dong)機(ji)怠速情況下(xia)，機(ji)器潤(run)滑(hua)油(you)(you)多(duo)少錢，將位于(yu)油(you)(you)路(lu)管壁及(ji)油(you)(you)底殼的(de)油(you)(you)泥(ni)、活(huo)塞裙(qun)部的(de)漆膜等分散(san)懸浮，以便換油(you)(you)時，借助(zhu)于(yu)流動(dong)(dong)的(de)廢油(you)(you)帶出發(fa)動(dong)(dong)機(ji)。必須采(cai)用(yong)動(dong)(dong)力設備，將失(shi)效(xiao)的(de)潤(run)滑(hua)油(you)(you)，尤(you)其(qi)是被清洗劑清洗下(xia)來的(de)廢油(you)(you)排出發(fa)動(dong)(dong)機(ji)。目(mu)前市場中主要有兩(liang)種潤(run)滑(hua)系統清洗設備，一種是靜態清洗，一種是怠速清洗。后者的(de)效(xiao)果要遠(yuan)遠(yuan)好于(yu)前者。

汽車長城(cheng)潤(run)滑(hua)油(you)(you)(you)判別(bie)更換(huan)的方法：1、將新(xin)機(ji)油(you)(you)(you)和使用過(guo)(guo)的機(ji)油(you)(you)(you)各(ge)滴一滴在白色的濾紙上比較(jiao)，如用過(guo)(guo)的油(you)(you)(you)滴中有較(jiao)多的黑(hei)點，機(ji)械潤(run)滑(hua)油(you)(you)(you)哪(na)家(jia)好，表明(ming)機(ji)油(you)(you)(you)未變質(zhi)，不應(ying)更換(huan);如機(ji)油(you)(you)(you)呈黑(hei)褐色，淮(huai)南潤(run)滑(hua)油(you)(you)(you)，則(ze)為(wei)變質(zhi)，應(ying)更換(huan)。2、用兩個直(zhi)徑0。5厘(li)米，長20厘(li)米的玻(bo)璃試管(guan)，機(ji)器潤(run)滑(hua)油(you)(you)(you)價格，分別(bie)裝入19厘(li)米的新(xin)機(ji)油(you)(you)(you)和用過(guo)(guo)的機(ji)油(you)(you)(you)，封好后兩管(guan)同時倒置，記錄氣泡上升(sheng)的時間，如果兩者相差超(chao)過(guo)(guo)20%時，則(ze)說(shuo)明(ming)使用過(guo)(guo)的機(ji)油(you)(you)(you)粘(zhan)度下降過(guo)(guo)多，應(ying)更換(huan)。

潤(run)(run)滑(hua)(hua)(hua)(hua)油(you)(you)(you)(you)(you)是(shi)涂在機器軸承等運動(dong)(dong)表面的油(you)(you)(you)(you)(you)狀(zhuang)液(ye)體，可以(yi)起到冷卻、洗(xi)滌、防(fang)銹、緩沖沖擊荷載(zai)等作用。潤(run)(run)滑(hua)(hua)(hua)(hua)油(you)(you)(you)(you)(you)按其(qi)(qi)來源主(zhu)要分石(shi)油(you)(you)(you)(you)(you)潤(run)(run)滑(hua)(hua)(hua)(hua)油(you)(you)(you)(you)(you)和(he)合(he)成潤(run)(run)滑(hua)(hua)(hua)(hua)油(you)(you)(you)(you)(you)兩類，其(qi)(qi)中以(yi)石(shi)油(you)(you)(you)(you)(you)潤(run)(run)滑(hua)(hua)(hua)(hua)油(you)(you)(you)(you)(you)為主(zhu)。潤(run)(run)滑(hua)(hua)(hua)(hua)油(you)(you)(you)(you)(you)按照用途分為工業潤(run)(run)滑(hua)(hua)(hua)(hua)油(you)(you)(you)(you)(you)和(he)車用潤(run)(run)滑(hua)(hua)(hua)(hua)油(you)(you)(you)(you)(you)，其(qi)(qi)中車用潤(run)(run)滑(hua)(hua)(hua)(hua)油(you)(you)(you)(you)(you)包括發動(dong)(dong)機油(you)(you)(you)(you)(you)，冷卻系統用油(you)(you)(you)(you)(you)、齒輪油(you)(you)(you)(you)(you)等。潤(run)(run)滑(hua)(hua)(hua)(hua)油(you)(you)(you)(you)(you)一般由(you)基(ji)礎油(you)(you)(you)(you)(you)和(he)添(tian)加劑兩部分組成。基(ji)礎油(you)(you)(you)(you)(you)是(shi)潤(run)(run)滑(hua)(hua)(hua)(hua)油(you)(you)(you)(you)(you)主(zhu)要成分，決定(ding)了潤(run)(run)滑(hua)(hua)(hua)(hua)油(you)(you)(you)(you)(you)的基(ji)本性(xing)質，添(tian)加劑可以(yi)彌(mi)補和(he)改善基(ji)礎油(you)(you)(you)(you)(you)性(xing)能方面的不(bu)足，并賦予(yu)新性(xing)能，是(shi)潤(run)(run)滑(hua)(hua)(hua)(hua)油(you)(you)(you)(you)(you)的重(zhong)要組成部分。潤(run)(run)滑(hua)(hua)(hua)(hua)油(you)(you)(you)(you)(you)作為石(shi)油(you)(you)(you)(you)(you)產業的下(xia)游產品(pin)具有(you)技術含量高、產品(pin)附加值較高的特點。