[Ryephile]

Here is my latest Blackstone UOA sheet.

*941 miles is the factory fill
*6k interval at 15k miles is actually the 3rd fill, used over winter '17/'18. It's Valvoline SynPower 0W-20 Dexos1 Gen2. This lower viscosity is for winter/street-only driving.
*5,600 interval is the most recent, at 21k odometer. It's Castrol Edge 0W-40 A3/B4, a high SAPS package. Perfect for track days.

The wear metals are stable, so it's fair to say the engine is broken-in. I'm disappointed in the Valvoline sodium-based additive package and low flashpoint. The Castrol is on-point with it's higher additive package. I am also impressed with the factory fill flashpoint.

The car currently has Pennzoil Platinum 5W-30 Dexos1 Gen2 in it for this winter, and then I'll likely go back to the Castrol 0W-40 A3/B4 in spring for next track season.