Manual Transmission Fluid on 2005 Volvo S60

What kind of manual transmission fluid does a 2005 Volvo S60 2.4l need and what are the changing intervals recommended?

Asked by for the 2005 Volvo S60
I like to change the fluid every 30k and I would only use the factory fluid.
What would be the factory fluid for this car and is it GL4 better than GL5 for manuals?

Thank you in advance for your answer. Please be specific.