My girlfriend drives a 93 eclipse with the 1.8 litre non turbo front wheel drive. The transmission was recently rebuilt and while I was changing the oil I noticed some transmission fluid. So I check it and it's low. Since it's under warranty it's going to be taken in, but I just need to stick some in there and all I have is some ATF+3. Is this the right stuff? Or does it matter? I don't want to screw things up with as expensive as it was the first time.