Originally posted by Dimi
Not entirely true...on my old Cherokee AW4 auto tranny...I changed the original oil at 145k and it didn't slip after that. Didn't slip before nor after.
Right right
Changing super old trans fluid
could cause the tranny to slip.
There are exeptions like Andy's Cherokee
Some cars/trucks have a drain plug on the pan allowing to do just a drain and fill without changing the filter, or some quick lubes will tell you to do your trans service for cheaper. The real use of these drain plugs is to drain the fluid before dropping the pan, if any one has done a auto trans service (fluid AND filter) without one of these plugs wished they had one.