How many gallons of antifreeze coolant does an 3406 e engine hold?

The Caterpillar 3406E engine typically holds about 10 to 12 gallons of antifreeze coolant, depending on the specific configuration and the cooling system design. It's essential to consult the engine's service manual or specifications for the exact capacity, as variations can occur based on the application and setup. Proper coolant levels are crucial for optimal engine performance and to prevent overheating.