my rear diff pinion seal is leaking. I've got the driveshaft off.....only to find that I don't have the right socket size (could it be....another unique nut size on a subaru?! I've got 22mm for the crank pulley, and 32mm for EJ axle nuts....but it's somewhere in between)

 

I want to get the nut broken loose before I go to work (in about 3 hours). so I can drop the diff tomorrow and get things sealed up.

 

 

anyway....anyone know the nut size so I can go buy a socket? I don't want to just guess (although I'm thinking ~28mm...)

crap...well.....off to sears. hopefully I guess it right the first time.

for future reference.....it's a 27mm

for future reference.....it's a 27mm

I know this thread is ancient but I just wanted to say thanks to Numbchux for actually posting the correct size socket once he found it.  I'm in the same boat as he was when he first posted and he probably saved me at least 1-2 trips to Sears.