I took my 2003 Mazda 6 to a Goodyear dealer for an oil change. It had been running perfectly, burning no oil. They had performed an unwanted engine flush. After that the engine burned oil like crazy. Then the engine failed completely in a very noisy manner. Mark VanWinkle of Blue Moon Auto. located and installed a 2006 engine of similar mileage. The car is back performing as it should A word to the wise: do not ever let anyone perform an engine flush on your car. Engines don’t need to be flushed! Don’t let anyone make money by ruining your car’s engine!