What are the applications for ThermoStasis oil thermostats?
Primary applications include motorcycles, automobiles, boats and recreational vehicles with air and liquid cooled 4-cycle internal combustion engines with external oil coolers. Additional applications include vehicle transmissions and industrial equipment and machinery with external oil coolers.
Why should I install a ThermoStasis oil thermostat?
There are two reasons to install a ThermoStasis oil thermostat:
1. Fuel cost savings – resulting from quicker warm up times and operating at optimum oil temperature.
2. Increased engine life. Oil is maintained at optimum operating temperature. This prevents prolonged engine operation with low oil temperatures resulting in crankcase oil dilution and contamination leading to internal engine corrosion and accelerated wear.
Does the ThermoStasis oil thermostat open or close at the specified temperature?
Neither. The oil thermostat maintains the oil temperature at the specified Operating Temperature by constantly metering oil flow to the oil cooler and through the center bypass. In practice this means that during most phases of engine or equipment operation the center bypass remains slightly open.
What is the maximum horsepower engine on which ThermoStasis oil thermostat can be installed?We specify our oil thermostats by maximum oil line internal diameter (I.D.). This refers to the I.D. of the EXISTING oil lines running to the EXISTING oil cooler or other external cooling device. Our oil thermostats with 3/8″-NPT or AN-6 ORB ports are suitable for installation on oil lines with a maximum I.D. of 1/2″. In practice this translates approximately to engines up to 120 HP. Our oil thermostats with AN-10 ORB ports and AN-12 ports are suitable for installation on oil lines with a maximum I.D. of 3/4″. In practice this translates approximately to engines up to 450 HP.

Will installing a ThermoStasis oil thermostat reduce my oil pressure?

No. In fact, installing a ThermoStasis oil thermostat may slightly increase your oil pressure when it is most needed Ð during cold starts. The oil thermostat achieves this by offering a shorter, less restrictive flow path to the lubricating oil while the engine is cold. The cold oil bypasses the oil cooler, eliminating the small pressure drop that would otherwise occur.

Is it possible for a ThermoStasis Oil thermostat to block the flow in an oil circuit?

No. A ThermoStasis oil thermostat cannot in any circumstances, whether operating normally or operating in a failed condition, block the oil flow in the oil circuit.

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