Civic EG

I know that our gearboxes are a bit sensitive with this matter . I am going to install a Cusco LSD and I was wondering if the 80/90 or 75/90 gear oil will do any damage to my gears ? Has anyone any experience on such a thing ?

iv put from that supper thin oil that honda sells 2 thick gear box oil tranny felt ok with all of that i say use hondas oil mix with thick gear oil 50 50