James Dockery’s Mayfield Dairy yellow Peterbilt 389


James Dockery’s 2013 Peterbilt 389 features a 500 hp Cummins ISX with an 18-speed transmission and 3:55 rears. The truck is painted Mayfield Dairy yellow and pulls a Vantage bulk tank. Dockery hauls cement out of Texas Lehigh Cement in Buda, Texas to Houston.

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