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Old 04-10-2022, 06:27 AM   #72
DrinkenBRZ
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Quote:
Originally Posted by gen3v8 View Post
^^^ So an oil with HTHS of 3.04 will be perfect for track use with an oil cooler keeping OEM reading @106C max?
Don’t forget to account for shearing of the oil in use from fuel and mechanical. You can estimate safety at 18-22% operating and half that for HTHS or use a voa and uoas to see how it’s holding up. From what I’ve seen most of the shearing is done before 1000 miles in use.

I too agree that a functional HTHS (after shearing of the oil) is fine for track days with a cooler or with stock power in this application.
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