If your OEM bushing has burned out and the silicone bladders are leaking all over the subframe like mine, you should definitely replace the diff bushing. Torn from, as the old saying goes, the difference is "night and day". It'll feel nicer, run better, etc. While I've had an increase in gear noise (cheekbones), I've also changed the diff fluid (which OEM FSM info says is never needed), so it may have contributed . The Whiteline bushing has tiny holes for flex and knurling/hatching on theβ¦