Have you ever wondered what may happen to your engine's delicate insides if you switch from dirty diesel fuel to the renewable power of biodiesel? One user-supplied video on the YouTube video-sharing website might have an answer for you.

There are not a lot of details about the video, except that the video's submitter claims that the puff of smoke that comes roaring out of his tail pipe occurred because he filled the tank with biodiesel after using diesel for some time. He says the car ran "100 times" better on biodiesel, then laments that he sold the vehicle, a Volkswagen with a license plate that reads "2RENU".

[Source: YouTube]

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