R32 GT-R, 160k+ km (probably more), no oil cooler, two overheats with 5W-60 (like 130+°C oil temps), three track days. Motor sounds the same as it's always been, car runs fine .
Ran a track day with Racing 10 as well, I think it runs better with that, but my car runs hot on the track.
Now that I have an oil cooler, I might switch back to Racing 10.