I need to change the rearend (posi) and tranny fluid (5 speed) on my 83 GSL can someone tell me what size square drive sockets fit the drain plugs. It only has 43k original miles but I think it's past due.

 

I just use a 3/8" socket/ratchet extention.


John

 

It was pass due back in 1988, you need to change fluids within mileages and time intervals. Moisture get trapped into your fluids reducing the life of your lubrication.



John

 

I see that redline makes a tranny and rear differential fluid. Is it as good as advertised? Thanks John for the help. The car was garaged for almost 14 years and am just hoping the fluids were changed at least once.

 

i would say it is.