2002 4.4V8 - 107k on the clock. Flush then new gearbox oil, or empty, fill, run, then empty and fill again?? Suggestions from a tech point of view appreciated

I’m a believer in drain fill, drive 500+ miles, drain and refill.

Jim

ok, all well and good, although garage doing for me so thats "115 x 2 which I guess is cheaper than a new gear box in time lol. Would you only replace the filter once, or on both occassions?

any flushing better than none at all but getting the fluid as clean as poss can only aid the longevity of the gearbox , id do a filter each time unless the gear oil still looks near enough new ?