Brad Williamson

Severe Service

A historic haul, diesel particulate filter cleaning issues, options for the SD line and more severe service information items are featured.

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Drivetrain Revolution

Innovative approaches to drivetrain design promise more efficient highway cruising.

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Oil & 2010 Tech

Most manufacturers have yet to extend change intervals, but oil seems to thrive in the new engines.

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DPF Cleaning

Careful DPF maintenance will boost both your uptime and bottom line.

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2010 Engine Performance

Manufacturers say EPA-driven changes yield better fuel economy and other benefits.

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