I just took off a friends 5T diff and filled oil. Nonsense to get a 1000$ car and find no oil in the diffs. When will HPI learn? I would prefer they dont assemble the diff at all. Since I have the SS, I know that the oil is in there for sure. Newbies will drive like that and will be back at the LHS to change parts soon. Maybe thats what HPI wants. Crap