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At what temperature should a Subaru thermostat open?

Subaru Thermostat Opening Temperature
The thermostat in a Subaru engine typically starts opening at around 195 degrees and is fully open at 203 degrees.
This means that the coolant temperature of a Subaru with the factory thermostat will start to rise at around 195 degrees and will be fully open at 203 degrees, allowing the engine coolant to circulate around the engine and reduce overall engine temperatures.

Is 230 degrees to hot for an engine?

Depends on the engine and the reason the temp is that high, but in general, 230 degrees is an acceptable oil or coolant temperature. Many engines run at around 230 degrees during normal operation and most engines will tolerate 230 degrees no problem.

At what temperature should a thermostat open?

between 180 and 195 F
At low temperatures, the outlet to the radiator is completely blocked — all of the coolant is recirculated back through the engine. Once the temperature of the coolant rises to between 180 and 195 F (82 – 91 C), the thermostat starts to open, allowing fluid to flow through the radiator.

How do I know when my car thermostat opens?

If you see the coolant flowing through the radiator, then the thermostat opened and is working properly. If not, then it is most likely stuck closed.

Which is better 160 or 180 thermostat?

A 180-degree thermostat is better for engine efficiency—aka better fuel mileage and decreased emissions. A 160-degree thermostat is designed to maintain a lower engine operating temperature, which tends to make a little bit more horsepower and torque.

Is 240 too hot for a car engine?

Most experts agree that your engine should run between 195 degrees and 220 degrees. In ideal situations, your needle will maintain a posture right in the middle of your gauge. Keep in mind that this can go up or down depending on the conditions in the vehicle itself (such as running the air conditioner or heater).

How do I know if my Subaru thermostat is bad?

Here are the symptoms: car will intermittently start overheating, when it does my coolant warning light will flash (according to manual it flashes when the engine is close to overheating and will turn solid once the engine is in an overheat state).

Is 185 a good coolant temp?

Vehicles have a thermostat that open and close at certain temperatures. When an engine is cold, the thermostat is closed so that coolant does not circulate. When the engine block reaches correct operating temperature, the thermostat opens and coolant circulates to keep the engine at the right temp. 175–185 is normal.

What is the desired thermostat temperature for most cars?

around 190 to 225 degrees Fahrenheit
Experts tend to agree the optimal engine temperature is around 190 to 225 degrees Fahrenheit.

Will 250 degrees damage an engine?

Anything over 220 is considered overheating. Some car systems alert the driver to overheating at 221 degrees; others begin this a little higher. But you may operate an engine as high as 250 degrees, or maybe even higher, as long as the engine coolant doesn’t boil.

What is the temperature on a 2011 Subaru Outback thermostat?

The specification for the thermostat is to start opening at 180 and fully open at 196. See specifications below. 172 is too low and may trigger fault codes the computer is designed to run at a higher operating temperature. Putting a lower T-stat won’t prevent it from over heating.

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