这应该是世界上最最便宜的换机油的方法，我的4个绝招 Why is this the cheapest oil change in

这应该是世界上最最便宜的换机油的方法，我的4个绝招
Why is this the cheapest oil change in the world? Because it includes four different DIY tools you can make at zero cost. In this video, I listed these DIY tools as four challenges. If you can make something even cheaper, then I will have the utmost respect for you.

Note that tools for oil changing are not that expensive, however if you can't locate them or if you don't DIY often, simple tools shown in this video would come in handy. If you do change your own engine oil often, then investing in better tools may not be a bad idea.