Differential gear oil

What type of front and rear differential oil do you suggest? Also what about transfer case, it's for a 06 tacoma 4x4 4.0 sport dc. ?? How much fluid for each? Thanks

 

I just did this yesterday. I used Amsoil 75w90. 1.6qt front, 3qt rear diff. I used the same fluid on the transfer case, 1.1qt

 

Rear diff- 3qts
Front diff- 1.6
TCase- 1.1
http://www.tacomaworld.com/forum/2nd-gen-tacomas/147631-front-diff-transfer-case-oil-change-howto.html

 

Mobil 1, 85-140 recommended by Chase at ECGS if you have aftermarket lockers.

 

I went with Mobil1 75-90 in all 3, amounts are already stated.

 

Should I use an additive if I use mobil 1 or amsoil. And is the additive just for the rear?

 

Additive is for the rear, and you have to use additive if the oil you are using is plain gear oil, some say they have friction modifier in them however (meaning no additive)

 

Did you have to use additive with the mobil 1?

 

I don't have mechanical LSD but Mobil1 does come with the modifier already in it. At least all the stuff I could find locally did. Couldn't find it without the additive.

 

If you are using this 75-90 it contains the friction modifiers.
http://www.mobiloil.com/USA-English...bil_1_Fully_Synthetic_Gear_Lube_75W-90LS.aspx