I have a 90 runner and i am about to change out my add hubs for manual asian hubs they are cleaned greased and ready to go. i plan on locking the acuator fork in place so it is always in 4 wheel drive. my question is am i going to lose all the oil out of the diff when i remove the 4 bolt auactor fork? i just recently change over to redline oil an went from 18 to 22 mpg. i want to know if i am going to need 4 more quarts that stuff aint cheep also if you know of any good build threads on second gen add diff stuff please let me know. thanks and yes i have searched this for a wile

 

You'll lose about 1/4-1/2 of it. If you do it right, you will be able to re-use it. I didnt since I did this mod a week after I bought the rig and I didnt know the last time the fluid was changed.

 

wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait wait...

18-22mpg with an OIL change?

I call shenanigans... explain this some more.

 

i changeed from regular oil to red line full synthedic that would be the motor front diff trany t case and rear diff now i get 20 mpg. it's simple realy before it was 18

 

the motor and trany can spin up much easer therefor more power!!!!!!!!!!

 

0h did i say 22 i ment 20. it all city driving and i have a hard time keeping my foot off the skinny pedal!