Gear oil details: Rear differential and manual transmission for change. GQ Patrol

[Kristofer go]

Is is okay to substitute SAE 80W 90 GL5 to replace the oil in the transmission?
Is it okay to substitute SAE 85 W 140 GL5 to replace the oil in my rear diff?

I cannot find the exact oils specified in the manual where I live. Can these gear oils work as substitutes?

Thanks for any suggestions and ideas you can share.

KRoatan

[GQ TANK]

What diff do you, if lsd then you need to use lsd. If you use standard diff oil, the lsd will not work - the diff will still work though.

what transmission do you have auto or manual