Originally Posted By: Tonystewart
Thanks for all the great advice, I'll investigate further.
The oil cooler was just installed, this UOA sample is without an oil cooler.
Oil temps haven't exceeded 224 since oil cooler install, typically 212 to 220.
Originally Posted By: Tonystewart
Similar equipped Toyota 86 oil temp data with 5w30 has shown higher oil temperatures than 0w20 in the few cars I communicate with. This was in autox use and one car at Road Atlanta Track day
Wait. How is this car used? Auto-X and track use or was that the other cars you communicate with? The oil temps you quote sound like the oil cooler is doing it's job well and will allow you to get away with a slightly thinner oil than without the cooler. Especially if it's maintaining those temps at the track. Do you notice the oil being any slower to heat up? I presume you're using the OEM ECU oil temp probe.
You seem to have a thing for esoteric oils with Sustina and now Nanodrive, though I'm not sure they have any benefit over cheaper, more available oils in this engine.
Dennis' M1 AFE recommendation is a good one, but AFE 0w20 has not been particularly shear stable in my Honda. I might give Pennzoil Platinum a shot in the 0w20 weight. It's very low NOACK indicates it might be closer to Ultra than the rest of the Platinum range, hopefully highly shear stable just like Ultra.