I'm changing the oil in my transmission, and rear end. I want to go with synthetics, and am considering Amsoil. From what I can tell, its best to go with a synthetic Dextron 111 type(Amsoil's Universal ATF), and not one of the newer Dextron VI types, which perhaps are too thin. Regarding the rear end, the nameplate on the inside of the door says: Axle: F5. , so I guess thats a limited slip rear end that would take a GL-5 type of lubricant. In the case of the Amsoil products, it means adding a friction modifier. I'm trying to get it right. Any suggestions or information is appreciated.

 

What transmission do you have? Don`t forget to drain the torque converter.

 

Sorry for not stating the transmission type. It is a code "W", that is a 5 speed ZF manual.

 

Ignore the bit about the torque converter then.
This is just me but I prefer Mobil products and for the trans I would use Mobil1 ATF. However the Amsoil would be fine.
The axle is 4.10 and as you say, limited slip. So you will need the additive.