I got the 4.56 and comptech upgrade from ricks, and im going to replace the fluid soon. I know that one QT is enough for the stock housing, but my diff looks different/bigger than stock. Im wondering if i need to order more than one qt of diff fluid or will one QT be fine? thanks.

 

Exact same thing;only internals are reinforced.

 

yea, but the actuall diff looks different, like the cooling fins are bigger, and the shape of the diff is somewhat different. In the stock diff how much does it take to fill....if its 3/4 of a QT then i think im fine, but if the stock diff needs a full QT i think i might need more.

 

Stock diff needs .82 qt. so you'll be just fine.

 

it could be an AP2 diff. so still same fluid requirements.

 

Should i get the LE607 diff oil or should i get the redline stuff? thanks guys. CHRIS

 

i am ready to do the fluid change too. i looked on this site for what others like/dislike and i am going to go with the mobil1 75w90. i only drive the S in the summer.

 

Redline 75W90 is also very good.!!!

 

i have only heard about people reccomending the LE607, is there any special advantage to using this oil? im probally going this way unless the redline is better. let me know thanks.