MB235.73 gear oil 75w

[SpeedEng]

2016 smart fortwo (453 gen3) Dct
(Vehicle is in the northeast usa)

MB235.73 75w gear oil is what came from factory..

I been trying to find it online.. but been coming up empty.. even trying to find straight 75w has been a mission..
What I found so far

Ravenol has a 75w but only mb 235.10 approved
Ravenol 75w

Redline has a 70w-75 but it too is also only MB 235.10..
Redline 70w-75

I'm just lost I thought gear oil (of the same gl4 cat.) is all the same
I need your expertise on the matter
Would these work?

 

[97prizm]

On Mercedes Benz website it lists Castrol Syntrans fe 75w as an approved.

 

[SpeedEng]

I guess next time when I am in europe (lol one day whenever this thing clears up) I'm gonna have to grab 3 quarts and bring it back...