Derale 15719 - Derale Fluid Control Thermostats

Recommended for engines and transmissions. As the fluid temperatures exceed 180°F the thermostatic valve closes, allowing 95% flow through the oil cooler. At temps. below 180°F the valve is open, with 90% of the oil bypassing the cooler. The remaining 10% of the oil flows through the cooler, maintaining constant system pressure, preventing air pockets and eliminating cold oil shock.