The diff makes a loud noise, especially right at 45mph. My first thought was diff fluid but the sound goes away under hard cornering. So now im thinking that one of the axles are loose? Any suggestions?

 

what kind of sound?
any vibration that seems to be directly linked to the noise?

 

i cant feel any vibrations. sounds kinda like a loud exhaust

 

Kay i started off with the cheapest thing that probably needs to be done anyway. I got 2 quarts of 75W90 Mobil 1 synthetic gear oil and a tube of posi trac / LSD additive. I'll be putting it in tomorrow and ill let you guys know if the noise goes away. Another question: how much additive do i use? its a pretty big tube...

 

fill it up until it comes out the hole

 

thats what she said ¬_¬

so use the whole tube of additive? then fill up whatever is left with the oil itsself?