Radiator Replace and weird nose...
 

Hello all... I have a 99 S80 with a 2.9L and I wanted to know if any one had tips on replacing the radiator...There's also a weird whining nose when I'm accelerating...The radiator has had a leak for a while so i try not to drive it but when i do drive it I have to put a 30/70 mix of coolant to water...Thanks