Transmission problems

Hi everyone, just wondering which gearbox oil you guys are using as I changed mine using redline t90 and it definitely doesn’t shift as good before I changed it. Thoughts please. Thanks

I use redline MT90 and can’t complain, depending on the condition of the gearbox some oils work better than others. I do also use a shot of XADO Revitalizant EX120, have You tried this?

No but I intend to whether I change the oil or not. Workshop manual states 75/85 but hard to find locally so may order something online.

Redline MT85 works well in the