Internal EGR means there's no new external plumbing on this '03-model Maxidyne. The system is simpler than cooled EGR used on other engines, but perfecting the valve action to make it work was not ...
Grayce Emmick restored a 1984 Mack R Model and donated it to the Mack Trucks Historical Museum in Allentown, Pennsylvania. The truck was originally custom built for Johnny Prescott and Son Oil, ...
Like many others of his generation, John Mack's first work experience was a turn on the plow. His German parents owned and operated a farm near Scranton, Pennsylvania, where John and his four brothers ...
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