Bonjour Jacques - Lots of threads here on fluids, but since you prefer Mobil products, I would suggest the following:
Diff - Mobil 1 75w-90 syn fluid. The 75w-140 in your post may be too thick.
Brake/clutch slave fluid - Mobil DOT 4
Tranny - Go with a 5w-20 syn motor oil before ATF. If you have access to synchromesh fluids, that would be preferable. See this thread: https://www.crossfireforum.org/forum...nsmission.html

I always thought there were more fluid choices in Europe than here in N. America, i.e., Castrol, Motul, Fuchs, Agip, etc...