[OkieSnuffBox]

Originally Posted by X25

Does it mean oil analysis? Anyway, I've got multiple samples tested on '16 C7 Z51 with multiple track days and below mid 280s degrees F on 0W-40, and multiple tests on '14 Camaro SS 1LE at temps below 290s degrees F, and there was no abnormal wear item whatsoever.

C7 Z51 thread:
https://www.corvetteforum.com/forums...ack-build.html

Camaro SS 1LE thread:
https://www.camaro5.com/forums/showthread.php?t=375406

My BRZ does not have enough miles on it yet, but I'm definitely planning on getting it tested, too. I'd love to share the results. I do not exceed 270s degrees F at the track, similar to pretty much every other car I've used at the track, except perhaps the '06 C6 Z06, which ran cooler.

Originally Posted by quikag

Same, I've rocked a C5, a C6 Z51, and my current (going on 12 years) '10 ZR1 with a ton of track time using 5W-30 Mobil 1 synthetic and oil temps regularly in the 270-295F range and have had zero engine issues over the past 20 years tracking.

Synthetic oil is fine at 270F IMHO. Those who want to potentially compromise warranty coverage and get oil temps down some by going aftermarket cooler, go for it! I'll sleep like a baby knowing my BRZ can get up to 270F-ish with synthetic oil on the track.

Those are much more robust engines.

As for an aftermarket cooler, I'll be if you lunch a bearing with an aftermarket cooler on the car they are going to blame it and deny the claim.