Can someone tell me how many bottles of 700ml (24oz.) Transmission Fix from Lucas I can safely pour into the transmission of my 2000 Stratus 2.4L? The instruction says two, but I did and it still slips, although it is better. I would like to push it a bit to 2.5 or 3 bottles, but I don't want to damage the tranny.

 

The 2000 requires ATF+4 ONLY! At this point, I would drop the pan, drain it out, refill it with ONLY ATF+4, drive for a couple hundred miles, drop the pan again, change the filter, and refill it again. Don't do one of those powered flushes!
If it's still slipping after that, than you're probably due for a rebuild.
How many miles you got on it, and when was the last time the transmission fluid was changed?

 

I have 83k miles on it. I bought it 4 years ago with 29k miles and never flushed the transmission. I doubt it was serviced before, since the the mileage was low when I got it.

 

Actually kinda jealous of your miles. But if it was driven rough, that fluid could be worn out, and if the previous owner didn't take care of it during the break-in period, the internal clutches may have been worn out prematurely. Get that fluid and that other "junk" out of there as soon as possible. Make sure there isn't more than just a fine grit on the magnet in the trans pan when you drop it. And ONLY USE ATF+4.