I totally forgot to collect an oil sample of the Valvoline Synthetic I had in there for a UOA but anyway, now the Vic has Royal Purple HPS. Since I'm doing a short OCI I left on the old filter... I'm going to do the next oil change at 130K (so about 3K miles) with a fresh filter and a UOA just to see how it goes. Then I'm gonna go for 10K OCIs. Initial observations are the engine seems really smooth and quiet - then again it was fine before. If I really had to guess, sure, it's a tiny bit quieter, but it's hard to tell if it's just my mind going $24 oil vs $48 oil... I'd say the most important part is that the oil poured purple, which is my favorite color...
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