Will adding 2-3 qts tractor hydraulic fluid to a worn out trans extend the life a little? Its a 2002 Ford Escape, 4 spd auto, 160k miles, the lock up torque converter slips sometimes when trying to lock up. If I drive with o/d off, the converter will lock up better in 3rd gear (at approx same speed = higher rpm = less torque to lock up) The trans fluid have been changed regularly with Dex 3. The car is not worth a new trans or rebuild. Other than the slipping lock up the trans works well and shifts well. I think type F would just kill whats left of the friction material. So I'm thinking tractor hyd fluid may be a little thicker and maybe hold a little more internal pressure and help the torque converter to lock up better. Thanks in advance for any help Flame away.