Just to add some more feedback to this very helpful thread, I changed to ATF +3 from Redline MTL about 10 days ago and it is noticeably easier to get into gear from a stop. Now, let me qualify this by saying that my MTX is surely nearing a rebuild. It can be extremely difficult to get into gear, moreso in cold weather. Often I have to rock the car by putting it in a higher gear and slowly letting the clutch out in order to find first or reverse.
So for an MTX 75 that has problems, ATF +3 is better than Redline MTL; though that was probably already evident.
