Question:I own a 2003 Dodge Ram 2500, 5.7-liter V-8, and manual transmission, and the truck has 122,000 miles. Since new, I have used Mobil 1 fully synthetic oil and started using the Mobil 1 extended ...
Modern medium- and heavy-duty trucks have sophisticated exhaust aftertreatment systems that can include a diesel oxidation catalyst (DOC), diesel particulate filter (DPF) and selective catalytic ...
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