Double-sided promotional sales literature for Mack EM6-300(R) Econodyne Diesel Engine.  Reverse side has three performance charts.  From 1982.  This is an Australian publication; I believe the differences between these and the U.S. publications are limited to showing the metric measurements before the U.S. system and some spelling (e.g., "litre"). I will combine shipping at the lowest possible postal rates for other trucking items I have listed.  Please check back - I will be listing more vintage truck paper items over the next few weeks.