I had to take the olds on a 5hr drive today. At the beginning, it was behaving pretty well. But during the drive, whenever I needed to give it a lot of gas, that mysterious whine came back. It is affected by the amount of gas or the RPMs. It gets really bad if I'm already up to speed and need to acelerate. But you can hear it wind up, but when the car shifts gears (It's an auto) the whine tones down and then rebuilds (in other words, with the RPMs of the engine).