Reasons to Use

• By using a hotter thermostat during the winter, a vehicle's engine will reach a higher temperature before the cooling system begins to work. As the heater and defroster use heat from the engine, a hotter thermostat will provide the vehicle with warmer air to heat the passenger cabin and clear the windows.
  
  

Lowered Fuel Economy

• Modern engines are a precise instrument designed to operate within a specific temperature range. The thermostat is responsible for maintaining this temperature range to assure that the engine operates at a peak level of efficiency. When a hotter thermostat is used, the engine temperature will be higher than originally intended, causing a decrease in efficiency and an increase in fuel consumption.
  
  

Increased Emissions

• Like the engine components, the emission control components are also designed to operate at a certain temperature. Higher engine temperatures may cause an increase in emissions into the atmosphere due to the lower efficiency of the engine. The increase in engine temperature may also cause premature wear of emission and exhaust components.