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2024 Lexus RX — first used-oil analysis: what matters?

WeekendPilot706Community StarterMay 17, 20262024 Lexus RX 350hSalt Lake City
2024 Lexus RX 350h, about 24,000 miles. I am thinking about sending an oil sample to establish a baseline. For a normal street engine, which trends are actually useful over time and which one-off numbers cause unnecessary panic? Mostly looking for the right next step.
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GarageGarage716Community StarterCommunity StarterMay 18, 2026permalink
If it were in my driveway, swap the cheap/easy piece first on the 2024 Lexus RX and see if the fault moves. Don't erase codes until someone who can help has seen them. This is from a 2024 Lexus RX in Salt Lake City with 24,000 miles. Write the result down so the next test isn't a repeat of the last one. That's my plan before I call anyone.
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