Originally Posted by
MAYAman
Ok, confused. You say we have no differential. Yet the oil might need to be changed? I thought it was sealed.
LOL, I think he is saying that there is no (difference) in our differential & most others. You must use synthetic gear oil meeting the specification.
(But) "black smudge" on the fingers could be part of some kind of con job. Maybe do it yourself or take it somewhere else.