毫无credit可言的“专家“还是人家专业分析发动机里机油的公司的结论。
给你说说俺的故事。
2017时俺的车已经一年多没换油了,离上次换开了3375迈,后来还是换了,换的时候决定把换出来的油送去一家有名声的lab去分析一下,结论如下,要点是:The oil won't go bad just from being in the engine, nor will it cause any harm so long
as it isn't full of contamination like moisture or excess fuel.