What typically causes low coolant levels in a motorcycle?

Low coolant levels in a motorcycle can often be attributed to leaks or malfunctions in the cooling system. A faulty thermostat can prevent the proper circulation of coolant, potentially leading to overheating, which might cause boiling or evaporation of the coolant. However, a more direct and common cause of low coolant levels is leaking coolant hoses. When hoses are damaged or worn, they can allow coolant to escape, leading to a decrease in the coolant level over time.

Considering that both a faulty thermostat and leaking coolant hoses can contribute to the issue, it is correct to state that both contribute to low coolant levels. This multifaceted understanding of the causes ensures that maintenance can be properly directed toward both the thermostat and the hoses when diagnosing low coolant levels in a motorcycle.