"Heavy Duty" only begins to cover it.

#7. Dodge’s HD pick ‘em up is emissions-compliant without the use of urea.

In an effort to meet stringent 50-state air-quality standards set for 2010, most new diesel-powered SUVs and trucks are using not only federally-mandated ultra low sulfur diesel (ULSD) fuel and particulate filters, but also urea injection systems (urea is injected into the exhaust to limit noxious tailpipe emissions). The urea is stored in a tank and requires refilling periodically. The 2010 Dodge Ram Heavy Duty’s 6.7-liter Cummins engine meets the standards without using the urea system, and instead depends on an exhaust filter working in concert with an absorber catalyst. Without a urea tank to fill, the Ram HD owner has one less maintenance issue to think about.

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