I just replaced a 20 year old waterpump...

[Starter986]

Originally Posted by pilut2

Ok- so you don't want to do the research.... I'm not an expert, but those who are explain that the stock thermostat starts opening at about 186 F and is fully open by 210 F- whereas the low temp version starts opening at 160 F and is fully open by about 185 F. This results in lower operating temperatures- oil and coolant- for more most driving conditions.

I'm no expert, either.

Yes, with the lower temp thermo it opens at a lower temp... but it keeps getting hotter until it reaches operating temperature. The low temp thermo does not cause the engine to run cooler.

So "This results in lower operating temperatures" is incorrect.

I installed the low temp thermo and my operating temps have remained unchanged.

[pilut2]

Originally Posted by Starter986

I'm no expert, either.


So "This results in lower operating temperatures" is incorrect.

I installed the low temp thermo and my operating temps have remained unchanged.

My experience has been different than yours. I drove for a hour or so yesterday with a combination of city and highway driving. In stop and go traffic my temps (according to the gauge) were slightly lower than with the stock thermostat but my highway temps showed a significant reduction with the needle settling just under the 180 mark, where it would've previously been a few needle widths higher, resting in the middle of the 8. It is my understanding that the actual coolant temperature is a fair bit higher than the indicated temperature- so there is no concern about the temperature being too low to burn off any moisture in the oil.

[Starter986]

Pilut2... interesting.

There seems to be two camps on the efficacy of the low temp thermo.

I'll wait for Jeff in PA to chime in. I'll follow his recommendation. If that means he recommends the stock thermo... I'll soon be swapping my low temp out.

Cheers!

[pilut2]

Originally Posted by Starter986

Pilut2... interesting.

There seems to be two camps on the efficacy of the low temp thermo.

I'll wait for Jeff in PA to chime in. I'll follow his recommendation. If that means he recommends the stock thermo... I'll soon be swapping my low temp out.

Cheers!

Some great back and forth in this thread.

http://986forum.com/forums/boxster-general-discussions/33593-why-i-installed-low-temp-thermostat-2.html

[kk2002s]

Originally Posted by pilut2

My experience has been different than yours. I drove for a hour or so yesterday with a combination of city and highway driving. In stop and go traffic my temps (according to the gauge) were slightly lower than with the stock thermostat but my highway temps showed a significant reduction with the needle settling just under the 180 mark, where it would've previously been a few needle widths higher, resting in the middle of the 8. It is my understanding that the actual coolant temperature is a fair bit higher than the indicated temperature- so there is no concern about the temperature being too low to burn off any moisture in the oil.

This is the same behavior I'm experiencing with the low temp thermo. You see a more detailed temp readout looking through the ECU.