I just changed the factory diff fluid in my '01 Chevy Camaro LS1 to Amsoil SVG 75W90 and it seems to make a lot more noise than it used to, especially in turns. It is difficult to describe but is sounds like a screeching sound. I did not add any LS additive because it is a Zexel Torsen that uses gears instead of the traditional clutch and cone type. Mileage is 5000 and everything looked normal when I had the cover off. Any help or ideas would be greatly appreciated. Thanks.
Sean
Sean