修理厂也有省钱的办法，换机油就是一个机会。一般捷达(图库论坛)车大约需要机油4.5升，富康(图库论坛)至少需要3.2升，奥拓(图库论坛)则需要3升左右。标准是将机油加注到油尺弯区上限。但即使你亲眼看见维修工将机油加到了这个位置，也并不一定眼见为实。因为就像变魔术一样，他让你看到的、让你相信的一定是已经有备在先的。他的准备工作是在放掉旧机油的时候。比如捷达，他们通常只放掉4升，这样在注入新机油的时候，就可以省下半升了，谁让我们没有将旧机油带走的习惯呢。

保养发动机的事情说起来，第一肯定是好习惯，好的机油也是必须的，机油好了起码是给发动机一个正常的工作环境，壳牌机油含有动力清洁分散因子，能把发动机产生的碳微粒和油泥颗粒包起来，防止堆积，保持清洁，这样起码发动机的寿命就得到保证，用起来肯定没错。壳牌的黄喜已经是比较好的矿物油了，再往上，蓝喜就属于半合成机油，最好的灰喜是全合成。这三款基本上可以满足从低端到顶配的车辆。合成油可用较低的黏度就能润滑，能更快更好的在如过冷过热等恶劣环境下实现润滑和保养，这也比较适合咱国家的地理环境

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