Exhaust nut size/oil from rear diff
 

Exhaust is blowing so had a look at there's 2 nuts missing are these m10 14mm ?

Also notice oil coming from the rear diff which doesn't look good could this be a problem
https://cimg8.ibsrv.net/gimg/www.sco...980b2d623f.jpg


https://cimg1.ibsrv.net/gimg/www.sco...f94ae67f77.jpg