All of the following statements are true EXCEPT:
A)sludge in the oil will increase if the engine is running at too cold a temperature for too long.
B)sludge is a mixture of moisture, by-products of combustion, and water.
C)high emissions and poor fuel economy result when an engine does not reach operating temperature.
D)when an engine is warm, the thermostat is always open fully.

Question

Quizplus · Accepted Answer

When an engine is warm, the thermostat is not always open fully. The thermostat is a component that regulates the flow of coolant through the engine based on its operating temperature, and it may not be fully open even when the engine is warm.

All of the Following Statements Are True EXCEPT