I put some lucas transmission treatment in it, bought at advance auto parts for around 7 bucks, and it helped a lot but instead of just reving it will back up but shimmies pretty bad. I was still able to buy an extended warranty so I did. It actually does good unless its on a big slope so I just try to avoid those situations. If you want to try this let me know and I will tell you how to put it in, its kind of pain but worth it.