I just got my 5k check up last Sat at a local dealer here in Chicago. I waited two hours - instead of the expected one hour to get my car back. The excuse I was given was that the engine was too hot to replace the oil. I only drove 3 miles to the dealer. On top of that they didn't clean the wheels. Now my steering wheel shakes/vibrates at high speeds around 50-60 mph. I'm guessing this is a wheel balancing problem. Isn't tire/rotation - wheel balancing part of the 5k service ? I now have an appointment on Monday evening to let them take a look at this. Does anyone here think this is acceptable service from a Lexus dealership?