Automatic Transmission - Drain or Flush when Brown?

DamionG1

Full member
Points
23
Location
Trinidad
Car
Nissan Sunny B15
Hi. I would like to know which is better for a 18 year old Automatic Transmission fluid changeout. i recently inherited the car and i have no idea on when last the fluid was changed. it is brownish red in color currently, no problems with it and its not slugish, slipping or anything. i just think it needs to be changed as with any engine fliud when its time or km mark has come. Any suggestions? thanks
 
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