Article on Synthetic Oil Survey

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This page documents a survey of the zcar mailing list. This is an auto enthusiast list, not related in any way to synthetic oil or any oil company. (I am also not associated with an oil company or synthetic oils in any way.) I asked the following two questions of the list members: "If you are now running synth oil, at what mileage did you switch from conventional motor oil? Do you now have oil leaks?"

Here's a little snippet from the article.