Engine Block Heaters - Mack Granite GU Series Operator's Handbook Manual

OPERATION 177

Engine Block Heaters

An engine block heater works by heating the coolant surrounding the
combustion chambers. Engine heaters are recommended to help combat the
extreme demands of cold weather operating conditions. When the temperature
drops, the engine heater can be plugged in overnight. The location of the
engine heater power receptacle varies according to vehicle design.
C0029338
1. Engine Block Heaters
Engine Heater Benefits
• Eliminates cold weather starting problems.
• Increases engine life significantly by keeping the engine warm and avoiding
costly, excessive idling.
• Prevents external water leaks caused by excessive cold.
• Allows the cab to heat more quickly.
• Reduces the temperature at which ether is required.
• Allows the engine heaters to be activated as soon as the engine is stopped.