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Popular Mechanics is a service magazine covering a variety of information on home improvement, automotive needs, electronics, computers, telecommunications, outdoors, fitness and science and technology. Popular Mechanics also features product evaluat...

Online information service on diesel exhaust emissions, emission control technologies, emission standards, regulations, measurement, health and environmental effects.

EurekAlert! is an online science news service, sponsored by AAAS, the science society. It features health, science and technology news from leading research institutes.

Unbiased car reviews and over 750,000 opinions and photos from real people. Use DealFinder to find the best used car deals.

Diesel Power Magazine is your source for diesel engines, tech, news and features which include Dodge Cummins diesel performance parts, diesel trucks and biodiesel cars, Turbodiesel, Ford Super Duty & Powerstroke, Chevy & GM Duramax engine

California Air Resources Board Home Page

GMC vehicles have the power needed to get the job done. Choose from the GMC lineup of pickup trucks, diesel trucks, SUVs, crossovers, vans and commercial vehicles.

Ford Motor Company maker of cars, trucks, SUVs and other vehicles. View our vehicle showroom, get genuine Ford parts and accessories, find dealers.

The leading resource on the value of clean diesel engines, fuels, equipment and emissions control technology.