Gearbox oil Haynes says ep80

I hoping it's not opening a can of worms like the engine oil question but which oil do I put in my gearbox, it's a 1972 2.0 type 4 engine if that makes a difference
Had a quick search on the forum which came up with 75/90
Thanks

 

Bog standard EP80/90, Syntrans 75-90 if you're feeling flush.

 

I used Syntrans 75/90 from Oppie Oils.

 

Thank you guys