👉 Rush fluid, also known as R-120 or 3M Rush, is a high-performance, synthetic fluid used primarily in the automotive aftermarket for enhancing engine performance, particularly in turbocharged and supercharged engines. It works by reducing friction between moving parts, such as pistons and cylinder liners, which can lead to increased engine efficiency, better power output, and reduced wear. Rush fluid is designed to be compatible with a wide range of engine oils and is often used in conjunction with oil additives to maximize its benefits. Its quick-acting properties make it a popular choice for performance enthusiasts and mechanics looking to optimize engine performance.