Redline is a popular one. The ester oil is so expensive... But oil temps (without a cooler) probably have more to do with driving style and oil weight than oil brand, wouldn't you think?
Here's a sample from tonight, this is the 5th pull.
Granted, this is on a new crankcase full of high quality oil, meaning it heats up (and cools down) more slowly than oil that's had several hundred miles on it, and my oil cooler is badass. My point is that selecting the proper weight has more to do with temperature stability than brand or formula does, and I don't think most folks with our cars choose the right weight for their environment/configuration.
This is all IMO, of course, I'm no engineer.
I was also curious what weights folks are using, rather than just MFG, should have been more specific, my bad!
