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Nothing wrong with 10K intervals if the engine is designed and built right.The Problem is people actually believe in 10,000 mile oil changes and lifetime transmission fluid.
I had a modern 2015 Lexus IS350 witha 6 speed Auto...oil changes every 5000 miles and a transmission fluid drain and refill every 30k miles....the car had over 150k miles with ZERO problems.Tranny shifted smoother than my highlander 8 speed was and it didn’t burn a drop of oil between changes.
Buy a quality product, take proper care of it and it will last.
Do oil changes every 10k miles and don’t touch your tranny fluid and see how that works out.
Check out the YouTube channel “Car Care Nut” he’s a master Toyota/Lexus technician that tells you the 10k oil changes and lifetime trans fluid are BS.
Modern synthetic oils can go up to 15k, but even if you would change your oil every 3K some modern engines are burning oil since new and wont live past 150K.
Lifetime transmission fluid is a different thing, I'd do it every 50-70K.