Originally Posted by CXTKRS1
I have to disagree to an extent. Once an engine warms up beyond a closed loop status then it is good to go. The high temperature T-Stats help cars meet emission standards and is pretty much the reason why they are standard on all cars regardless of make and model. I prefer a colder thermostat which lowers under hood temperatures, allows for an increase timing, reduces fluid stress, and of course colder air.  |
If you want your engine to run cooler, that's fine... but it's hard to disagree with the statement I made. A hotter engine is generally more efficient. The cylinder walls will not rob the combustion chamber of as much heat. So, more of the energy from combustion is turned into mechanical power.
By the way, I checked it out, and it seems like the fan comes on at 205F. It was only 75F out when I tested it, and the fan never came on during my 30 mile commute. When I parked at work, I let it idle with the AC on at it finally got hot enough to start the fan. During my commute, the temp stayed in the 198-202F range. I'll go out on a limb and say that it has a 200F thermostat in there.