There are so many automatic transmission additives on the market but Lubegard belongs in your online shopping cart for several reasons. First of all, it is an exceptional conditioner that contributes to better and smoother shifting, and its formula acts as a natural lubricant with a high viscosity index that is capable of resisting high temperatures. This tolerance to heat prevents it from thinning out or reacting with oxygen. This feature makes it the ideal additive for old and fresh automatic transmission fluids. The formula also reduces friction, optimizes performance and lowers the operating temperature. All of the above works in favor of new seals and old ones as well. This Lubegard product is available in three different sizes and can be used with all mineral based and synthetic automatic transmission fluids.