About 21,000 at this time (we drive quite a bit). And I never said there was a problem since the HT/HS of the 508 00 oil is adequate under most circumstances. But that’s not what I’m after, and there’s no downside to a somewhat higher HT/HS other than a slightly lower fuel economy that I’ll never see in real-world driving. A smallish 4-cylinder engine with a turbocharger isn’t an unreasonable application in which to use the 504 00.