[Christ]

Originally Posted by luvit

i get that. the reason it wasn't done was, i wan't going to go through all that, nor pay someone. i went to a "penzoil oil change" oil change company to flush and add tranny fluid.
their tranny flush does not drop the tranny and claimed to back flush the tranny filter.

so my question should have been:

what are the odds i'll have trouble?
i replaced 25yr old tranny fluid in a tranny that's never been dropped.

My answer is:

Have you ever tried to wash grease out of a t-shirt from the backside?

That's what they just did. If they flushed your transmission, there is a high likelihood that you'll have trouble in the near future. Monitor your fluid closely for grit and a burnt smell, and pay close attention to your transmission's cold and normal operating performance.

If you see grit in your fluid, there's a good chance that the clutches are wearing in your transmission, and it may fail as a result. Most OEM's do not recommend transmission flushing due to this sort of thing. Also, as I noted above with the T-shirt analogy, it's simply not possible to clean a filter by back flushing it. You'll get the solid particulate off the surface, but the filter media will still be dirty and restrictive, which is bad.