Derale Fluid Control Thermostats

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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.