The taskmaster of the Power Stroke's ultra clean emissions is a super-efficient exhaust system that incorporates a diesel particulate filter (DPF) and an oxidation catalyst that work together to remove 97% of particulate matter (soot) and bring total emissions to gasoline engine levels. Ultra Low Sulfur Diesel (ULSD) fuel
is required for this engine. A 5-percent blend of biodiesel is allowed and it actually enhances the lubricity of the fuel for better fuel system lubrication.
Read more: 2008 F-250 Super Duty 4X4 Diesel test drive and review