Mazda Skyactiv-D Clean Diesel Four-Cylinder Racing Engine Announced for Grand-AM Series

We've known that Mazda has been readying a diesel engine for the North American market for few months now; what we didn't know is that the engine would play a role in Grand-Am creating a new class for the 2013 series. Read full story » from Car and Driver Blog http://blog.caranddriver.com

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