PTI engine heating system for Mack military truck

Phillip & Temro’s engine heating system enables the U.S. Army M917A3 Heavy Dump Trucks (HDT) operate effectively in cold temperatures.

Mack Defense and Phillips & Temro Industries (PTI) have partnered to prepare the U.S. Army M917A3 Heavy Dump Trucks (HDT) for harsh cold temperatures with an engine heating solution designed to allow the trucks to start and operate more efficiently and effectively in extreme cold weather.

“Mack Defense is proud to be part of this effort to give the M917A3 the ability to operate in extremely cold environments,” said Kenneth Robinson, Mack Defense project engineer. “Together with PTI, we produced a solution for harsh cold weather starts that our U.S Army can rely on.”

When activated, the PTI engine heating system circulates warm coolant throughout the engine to provide even heat distribution. Thermostatically controlled heat distribution ensures fast starts for critical applications needed by the U.S. Army, Mack said.

Warming the coolant also reduces fuel consumption, emissions and engine wear, all critical factors. When equipped with the PTI system, the M917A3 HDT is designed to start in extreme temperatures as cold as -40°F and provides optimized cold start performance.

“PTI’s products come from a strong history of innovation stemming from work in some of the coldest climates on earth,” said David Marohnic, heavy-duty heating systems engineer for Phillips & Temro Industries.