Quote:
Originally Posted by Big Dave
It is not easy finding thermostats that will allow exploiting the high boiling point of the glycol mixture.
You'd also have to temper down your heater/defroster temps. I have a 203 degree stat and the heater will burn your fingers and the defroster will crack the wiondshield in extreme conditions.
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Here's an interesting thread about 205F thermostats
Modified Thermostat for higher MPG's... - TDIClub Forums
As for the heater I just have as manual as it comes so I can adjust it whatever way I want.