i'm not sure where you are looking but subaru lists brake fluid REPLACEMENT every 30K miles on your WRX.
~137K for engine coolant flush
nothing on trans/diffs they don't last long enough anyways.
ah, you're right. brake fluid does say to replace every 30k.
my engine coolant says to replace every 30k too, not sure where you got 137k from, the entire service schedule only goes out to 120k.
and like i said, no interval for trans/diff fluid, only inspection, forever lol.
timing belt/water pump @ 105k
regardless, everything gets replaced on MY car every 30k with good fluids, not the cheapest shit from autozone.
Motul RBF600 brake
Motul 75w-90 in trans and diff
regular Prestone coolant + 1bottle of Motul MoCool (its like water wetter)
i rolled the 105k service into my engine build since it was around the same time.
my trans hasnt had any issues, unlike a lot of NASIOC/subaru guys, but i suspect they arent replacing the fluid, or arent even checking the fluid, and/or being brotards beating the shit out of their cars doing launches and shit. or all three lol.