I bought a 2014 Scion Tc 3 weeks ago to replace my boring 2015 Corolla which had a CVT transmission. The Scion has the 2.5 L 2AR-FE I4 engine and the U760E/F 6-speed automatic transmission. The vehicle is made in Japan. It's a fun vehicle and obviously more capable than the Corolla. The car has a low mileage (22,000k). It never went out in the winter. The vehicle in in a perfect condition. No rust, well maintained, no complaints. However, I like to know where I'm starting from when I buy a new vehicle. As the car has been driven very little, I asked the dealer to change the transmission oil and the radiator fluid. I watched the mechanic do the job. With regard to the transmission, he removed the drain nut, let the oil flow then put the nut back and then put the same amount of oil back through the filler hole. I asked some mechanic friends if this procedure was the right one. According to them, by doing so the mechanic at the dealership removed only the oil due to the expansion caused by the heat. Still according to them, the mechanic should have made sure that the oil was at the right temperature. He should then have removed the plastic rod (overflow) too after removing the drain nut. Then he should have circulated oil until the oil return was clean and then finally adjusted the oil level. I intend to redo the oil change at 30,000K but at this time it will be a partial oil change and not a liquid replacement. Anyone have an opinion on the oil change?