I have a 91 f-150, 4.9 straight six, auto, 170,000 miles, and the transmission seal is leaking. I put 2 quarts in it all leaked out in about a minute. I talked to a guy he told me to get a transmission from the junkyard because if the seal is bad the bearing is probaly bad too. I talked to the junkyard and they said just to replace the seal and bearing because ill probaly have the same problem with a junkyard tranny also. So i need some advice on if i should get a whole new one or just replace the seal and the bearing on the one i have.