Unless MB has changed their policy and not told me, Kestas is right on at least one matter. MB publishes a Recommended Fuels And Lubricants List. The products listed are products that MFGs have submitted to MB for testing at their expense. If the product passes MBs testing, it is listed. That doesn't mean that a product made to industry standards isn't just as good, because it isn't listed. It is pretty much the same as Underwriter Laboratories. Most people take the little UL sticker to mean UL approved. The UL sticker means it has been tested by UL, passed the bare minimum standards, and is now UL listed.

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