[Beth]

I work at an auto repair shop. I have been trying to cure a whine for a couple years now. I have replaced the rack the lines the reservoir the cooler and the pump many times I have replaced the pump I have used aftermarket and I have used original equipment same results! I have it down now that it only starts whining when I go more than a 20 mile drive it will start whining so I've been trying not to take it on trips I have flush the power steering fluid many times as well and added an additive Lucas our mechanics are out of ideas? Any thoughts from anyone?