He actually researched well beforehand. Temp goes up significantly with higher weights which mitigates the extra film strength. Apparently not as much as he expected. It's odd because it's a car made for this use and his issue is not uncommon. Who knows? Maybe it was high sustained G related oil starvation.Yeah track days: never run 0w20. Might as well use water. It’s so light. Won’t leave any protective coating. Honestly the only reason I see companies using 0w20 is for gas efficiency. Back in my younger days, 0w20 wasn’t even a thing. Didn’t even exist.