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randytrish randytrish is offline
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Join Date: Sep 2006
Location: King, North Carolina
Posts: 127
watching oil temperatures....internal thermostat???

Hello all,
I've been searching and reading posts here on Pelican concerning oil temperature. I purchased a '75 911S last fall, spent most winter refurbishing the interior and getting familiar with the car. I am somewhat concerned about my oil temp in warm weather (above 80). My car is equipped with the eleven blade fan and an additional front cooler. My oil temp runs around 220-235 when driven in 80 plus temperatures at highway speeds, 3300 RPM. I am checking the temperature by the gage and also a pyrometer with an immersion probe directly in the oil tank with the engine running.
My external cooler/thermostat seems to working and opening/operating correctly.
My question is concerning the internal thermostat. How does it work and is there a way to check it's operation? I have to believe that is the original thermostat. I read here that over time the internal thermostat can fail.
Thanks, Randy
Old 06-20-2007, 04:18 PM
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