hi all is changing oil in 6 speed gearbox (my02 sti )as simple as drain out from sump on box,then fill through dip stick hole,am i right in thinking that hard part is filling up as access is not good because of intercooler?any advise as doing this job at weekend.thanks in advance.

 

any ideas on this,just want to know is that sump on bottom of box the right sump plug to drain oil ?doing it soon lol.