What brand of tranny fluid do you guys use?

and what rear end fluid do you guys use, (brand and weight) and do we have to add friction modifier?

Thanks

 

I use Castrol synthetic trans oil. Rear end Valvoline 80/90, although, I'm going to change to Royal Purple when I do my gears. As far as friction modifier, it depends on type of carrier you have. Clutch type, yes. Cone type, No.

 

I use Royal Purple in my trans and diff. Most synthetics already have the friction modifier in it. The Royal Purple does. 75/90 in the diff and the trans uses automatic fluid.

 

Thanks for the reponses.

So the manual trans uses AT fluid right?

 

Yup