When a vehicle is having problems with the reverse gear, it is usually indicative of a developing transmission problem. Transmission-fluid additives may help with some specific transmission problems, but there is no single-product cure-all solution for transmission issues. If your vehicle is having transmission problems, you should take it to a certified transmission specialist to have the problem diagnosed. Discuss with your mechanic which additive, if any, would most likely solve or help the specific problem your vehicle is experiencing with your mechanic.
The first thing you should do if your vehicle is experiencing transmission problems is check your transmission fluid. Low or worn-out transmission fluid is one of the most common causes of transmission shifting problems. If your fluid is old, discolored, contaminated with another fluid or low, you will want to have your fluid flushed and changed. Make sure the correct type of transmission fluid is used in your vehicle. Using the wrong type can lead to premature failure of the transmission. Some transmissions are very sensitive to the type of fluid that is run in them. Replacing old transmission fluid with new may solve your transmission shifting problem.
If your vehicle's reversing problems are being caused by continually low transmission fluid due to a leak, you may be able to extend the life of your transmission by using a transmission additive designed to stop leaks in the transmission.
There are several different brands of additives that lubricate the gears to help improve shifting. These additives claim to be able to reduce friction in between gears.
