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Message: <blockquote data-quote="Mr.Glock" data-source="post: 4235112" data-attributes="member: 32877">I was in a Petroleum Engineering Class in 1981, the instructors and a few of us was sitting around bull shitting and one of them made a statement to the effect of in the near future there is coming a big push by Oil Companies to start a campaign of changing oil in autos ever 3000 miles, and we will start seeing oil change oil drive ins pop up. Damn if it was not a year or so later just that started happening. Same instructor simply said to follow the Mfg of said vehicles recommendations on normal or severe use intervals.</blockquote>