This doesn't sound good to…
This doesn't sound good to me. Especially if you’ve been keeping up with the oil changes, I do mine every 5000. At first I was doing them every 10,000 because that’s what the manual said. I’ve got 192,000 on my 2013 Toyota Tundra and it runs great. I’ve caught my local dealer several times trying to tell me my oil was dirty and low. When I just changed it ... telling me my transmission fluid was brown and burnt when you could tell the hadn’t put a wrench to actually check it … and this was a dealer doing this. When I confronted them, they said oh well that language was just done by the computer and based on my mileage, it said I needed it.