[MT-2500]

12Ounce
You are right on they do not actually state that a flush machine is rquired.
Just that a total fluid change is required to get all of the old fluid out.
But on the ones that do not have a converter drain plug.
The only way to do it is to take a cooler line lose and pump the old fluid from cooler line into a bucket or container while pouring in new fluid or just use a flush machine.
Quick lubes and ford dealers push the flush machine and sometimes just for a money maker. But if used right it is good for a lot of trans.
I still use the old 5 gal bucket. I have a 3 way valve that I hook into the cooler line and can turn on and off as needed.
MT-2500