As the engine heats up from the process of burning fuel to create power, the coolant in the engine is also heated, reaching operating temperatures of approximately __ 150^circ -175^circ F b. 180^circ -220^circ F a 225^circ -250^circ F 255^circ -290^circ F

The coolant in an engine typically reaches operating temperatures of approximately:b. This temperature range is necessary to effectively transfer heat away from the engine and prevent overheating.