LUBEGARD(R) Kooler KleenTM Trans Flush (Solvent based) uses a proprietary mix of detergents to safely clean transmission lines. This product works without any water to remove grease, dirt, grime, and metal shavings that can clog up the lines, and it inhibits their return. Because of its unique solvent formulation, it will not degrade new automatic transmission fluid. The safest, most complete Transmission Cooler Line Flush available!