[quote=Byte Stryke;287260]2004 Chevy Blazer 4x4

should be cheap enuff-front diff takes 2-3 pints of 90 weight and the rear takes up to 4 could be either synth or regular and if its a limited slip youl need the friction modifier or youll burn the clutch pacs out-yea i tried to bypass that once and the thing chattered like a mo fo!!
but if its runnin fine and not leaking i wouldnt get overly concerned till the nice wheather and after tax returns