Guys, he sad it was turned by itself so it was not tight.

This kind of leads to what one of the member siad near the start of the Thread that the Seal often leaks if there is a problem with the Bearing; and, that would also be a resonable explaination as to why the nut was loose.

However, the problem is what is he to do now?

If he installs the Seal he will need something to Torque the nut to.

Or if he decides not to mess withit he had indicated he was open to getting a used Differential.

__________________
84 300D, 82 Volvo 244Gl Diesel