Rear axle type H oil capacity Ford transit Mk3 1990

[FedeMK3]

Hello everyone, I have a question about the oil capacity of the differential of a type 34 (or H, it is the one without back cover identified with code B) axle single wheel for a 1990 transit mk3 van.
Recently, I broke my differential and I replaced it with an used one (the seller told me that all the oil was drained off).
After I left the van to a garage for change the axle, the mecanician said me that only 1.25 litres of oil was enough, however the manual said 2.7 litres.
I checked and the level is ok.
Do you have any explication about that? Maybe there was already oil inside the new piece? How many litres stays in yours?

[MinorMatt]

Mechanic is correct, its about 1.25L

[FedeMK3]

Ok, so why in the manual is written 2.7l for code B?

[dumper]

If you have not had the hubs off and the half shafts out it will take less oil for just a oil change ,when I have the hubs off I always check the oil after a run as some oil is transferred into the hubs.

[FedeMK3]

So basically is 2.7L when half shafts are off. So, because I checked the level after 100km and it is still ok, I suppose that there was already old oil in the hubs. Just I hope that the mechanician didn't put grease in the hubs..
So I suppose that I can drive without problems for the moment...

[dumper]

If the bearings are being replaced or washed out to inspect them it always pays to pack them with grease but not fill the void in between with grease