How do you change 1989 ford aerostar transmission oil?

Answer 1

There are two methods: 1) Jiffy Lube and other quick lube shops use a Transmission Fluid exchange machine. It is done while the engine is running in order to exchange old fluid from the torque converter. The filter and gasket are not changed in this procedure. Cost - about $90 2) You can drop the pan and let the fluid drain. This method allows changing the filter but there is a small amount of used fluid left in the torque converter. Cost - around $20