I just got the oil analysis back for our 2022 Cadillac Escalade with the 6.2L L87 — yes, the one that was part of the active recall, and it passed the Pico test. I ran Mobil 1 Supercar 0W-40 for about 5,000 km and sent a sample to the lab so we could see what’s actually going on inside the engine. The cool part is this report includes virgin oil data, so we can compare brand-new oil to the used sample side-by-side. Right out of the gate, the lab rated the engine an “A” for cylinders, pistons, and rings, and the wear metals backed that up. We go line by line through iron, aluminum, copper, lead, tin, and chromium, and my take is the wear is low across the board. Iron came in at 20 ppm, which I consider very solid for this interval, especially when you compare it to my 2021 Sierra 6.2L sample that showed 60 ppm on 0W-20. But here’s the thing I didn’t expect: fuel dilution. The report flags it as “yes,” and you can see it in the viscosity drop — the oil definitely thinned out. I break down what fuel dilution means, why it matters, and my most likely causes in the real world: short trips, lots of idling/remote starts, cold Canadian winter starts, and direct injection design. Bottom line: the engine looks healthy, but I’m watching the oil condition closely and we’ll confirm the trend with the next 5,000 km test.