Hi there. i have a trans cooler from factory i think and im trying to do a full trans oil flush but i have no idea which one is the return and which one is the send line. PLEASE SOMEONE HELP!!! i dont know where to take the hose off.
You can take either hose off - they both will pump out trans oil. Whether they are before or after the cooler doesn't matter. Use 2 spanners when undoing the unions.