This Amazon’s Choice transmission conditioner from XADO is available in syringe form with two different formulas for automatic and manual gears. The formula delivers instant results when it comes to repairing and rejuvenating this integral system and does wonders for worn and scratched metal. The fast-acting conditioner can be used with all automatic fluid transmissions and does not react with or alter their chemical properties. It takes around 50 hours for the formula to complete its repairs. What is also great about this product is that it adds a protective layer to help preserve and extend the life of your vehicle’s transmission system while reducing friction and shielding it from extreme temperatures. One syringe, however, is not enough if your vehicle suffers from major transmission wear.