gearbox and rear diff oils

Just a question how much oil do I need for both the diff and gearbox as I think it needs changing, also what oil does the rear diff need normal gearbox or different?

Gearbox and transfer i used different kinds think the transfer box was 1.5 and gearbox was about 3 litres, was a while ago i done it but something to do with syncro mesh which meant a different oil

Sorry if thats no help lol

75w/90 in both for road car rich
gearbox holds around 4.5ltr from empty and transfer around 1.5 as said

ok cheers guys

I've used mt90 in my box u need to make sure it's a GL4 only oil as new oils are mostly GL5 nowadays and that will react with some parts in the box.

Indy wrote:I've used mt90 in my box u need to make sure it's a GL4 only oil as new oils are mostly GL5 nowadays and that will react with some parts in the box.

Yeah this is what i meant by sometging to do with syncro mesh

i've actually switched to redline mt85 for my gearbox, warms up quicker and i live in a cooler environment,
motul 75w90 for the transfer
motul 90pa for the rear diff, but i have a 2way nismo diff.

Show off lol

Well the garage didn't change the oil in the rear diff as he couldn't remove the fill up plug but with some heat I got it out and drained today so how much oil in there please? I know it's till it starts to run out the fill up but a rough idea on how much to buy will be a great help

1.5L sure it only hold about 1L i use gl5 in rear diff