Five , six years . And this is like a checkup for us . Um , achance to poke around the engine maybe chang the oil , replace a seal or two . Yeah .

约翰 ·史密斯：五、六年了，这对我们算是一次检查，看看引擎状况，换个油，换一两个零件。

youdao

You can damage your engine if you're not careful to use the right oil filter and replace the oil-drain plug without stripping its threads, or forget a leak-stopping gasket.

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