FYI: A low-temp thermostat improves performance in two ways: first by increasing the mass flow rate of intake air, and second by reducing the engine's tendency to detonate.

From the laws of physics, cooler air is denser than warmer air. Since horsepower increases as the amount of air and fuel burned increases, cooler air (with more air molecules per cubic inch) makes more power. The low temp thermostat allows the engine to cool down to a lower temperature than the factory thermostat to make more power. At the drag races, water can be sprayed on the radiator between races to drop the temperature and improve performance. A low temp thermostat ensures that you leave the line at the same temperature on each run to give consistent maximum performance for bracket racing.

A lower temp T-stat reduces the temperature of both the incoming air/fuel mixture and the surfaces of the combustion chamber, greatly reducing the tendency to detonate. Detonation is an audible pinging / knocking sounds, refers to the spontaneous explosion of the unburned air/fuel mixture in the combustion chamber. Detonation reduces power, and can severely damage an engine. A lower temp T-stat allows the engine to safely develop more horsepower.

This Hypertech 180º Thermostat work with the following:
- Chrysler 2005-09 Hemi 5.7L
- Chrysler 2005-09 Hemi 6.1L
- Dodge 2003-09 Hemi 5.7L
- Dodge 2005-09 Hemi 6.1L
- Jeep 2003-09 Hemi 5.7L
- Jeep 2005-09 Hemi 6.1L

Purple Ice® is a high performance, synthetic, radiator coolant additive for both gasoline and diesel engines. It is formulated to reduce the surface tension of the coolant, which improves heat transfer through the cooling system while providing additional protection against rust, corrosion and erosion.

Purple Ice® prevents the formation of scale deposits in the radiator for optimum coolant flow and lubricates the seals of the water pump. It is ideal for use in straight water racing applications or in antifreeze / water mixtures.

Purple Ice® is compatible with traditional ethylene glycol antifreeze (green) and GM Dex-Cool® antifreeze coolants. Purple Ice should not be used in new radiators until anti-freeze has been cycled through the

Purple Ice® Performance Advantages:


• Reduces Coolant Tension
• Reduces Coolant Temperatures
• Protects Aluminum Cooling Systems
• Lubricates Water Pump Seals
• Provides Corrosion Resistance
• Passes ASTM Corrosion Tests
• Works in both Gasoline and Diesel Engines

Item #: ROY-01600

$ 11.75