It's interesting that the oil temperature debate is still going on. I got frustrated with my 370 and went back to Porsche. However it appears that some of the new P cars are subject to high oil temps. My current car, 09 Carrera S, showed an oil temp of 250F on track with the ambient air at 60-62F. That would be considered by many to be way too high for an air cooled 911. So I added a third radiator to the front for insurance. The water cooled 911's use an oil/water cooler. The next track day the air was 95F and I never saw anything over 240F on the oil. The interesting thing was the oil temperatures in a friends car which was identical to mine with the exception that his was equipped with a PDK transmission and he hadn't installed a third radiator. He was seeing oil temps of 270F after 20 minutes on the track. In his case there was no limp mode.
It's funny that both Mobil and Castrol formulate specific oils to combat shear for air cooled V Twins due to the oil in their rear cylinders running in the 250-270F range. I'm switching to Motul 300V for the summer and will go back to Mobil 1 0w40 for the late fall.
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16 Cayman GT4, Carmine Red, Buckets, PCCB etc.
Last edited by alan93rsa; 06-30-2011 at 01:00 AM.
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