diff fluid question

I got Mobil 1 LS 75-90 gear oil for the front and rear diffs in my 07 sport and I'm wondering if I still have to add the limited slip additive or is the gear oil sufficient enough that I don't have to? Any experienced input would be a big help. Thanks

 

http://www.tacomaworld.com/forum/technical-chat/24545-changing-differential-fluid-step-step-how.html

 

search the thread, there were alot of people asking in the latter pages if they needed the LSD additive and they were listing models and and year see if someone has it in there already. sounds like you have a 4x4 if you also have a front diff. i dont think you need the lsd add if you do

 

whoops take back what i said,

 

Thanks, talked to a guy at autozone and he claims its a great gear oil for the lsd. Their word isnt always right but its a step in the right direction

 

I have a 10 trd off road and i used the exact same oil as you listed lucas 80w90 gear oil with the lsd additive in mine. works fine for me