Originally Posted By: doitmyself
There seems to be some confusion here. Some are saying to use the OUTPUT line of the tranny. Others are referring to the RETURN line to the tranny.
I was always taught to use the return line as the drain and pour the new fluid in the dipstick tube.
Yes, it's better to use the return line, that way the old fluid in the cooler ( the bottom of the radiator ) also gets pushed out and changed. That might not happen if you use the output line from the tranny.
There seems to be some confusion here. Some are saying to use the OUTPUT line of the tranny. Others are referring to the RETURN line to the tranny.
I was always taught to use the return line as the drain and pour the new fluid in the dipstick tube.
Yes, it's better to use the return line, that way the old fluid in the cooler ( the bottom of the radiator ) also gets pushed out and changed. That might not happen if you use the output line from the tranny.