This one is from Racer Parts Wholesale
http://www.racerpartswholesale.com
PermaCool Remote
Oil Thermostat
Maintaining proper
oil temperature is critical and the installation of an auxiliary
oil cooler helps keep the oil below the 190 deg. F maximum temperature. Installation of a remote oil thermostat, in addition to an oil cooler, provides faster warmup to operating temperatures. When oil temperatures exceed 180 deg. F, the thermostatic valve closes allowing full flow through the oil cooler. At temperatures below 180 deg. F, the valve is open with 90% of the oil bypassing the cooler. The remaining 10% of the oil flows through the cooler to maintain constant system pressure and prevent air pockets in the cooler system. Flows up to 20 GPM at 200 psi. Has 1/2" npt ports.
This one is the Mocal from Pegasus
http://www.pegasusautoracing.com/
Roscoe