This spray contains a high-quality exhaust gas recirculation (EGR) cleaner. The spray can be used to clean deposits in the EGR valve, air intake system, manifold and inlet valve. The use of this spray will reduce exhaust smoke, restore the optimal flow of air to the engine, and ultimately improve power and acceleration. Before use, carefully read the following directions and act accordingly. The canister should be kept and used at room temperature. The optimal use of the spray can be guaranteed at operating temperatures between 5 °C and 30 °C. Shake before use. Make sure to observe the instructions of car manufacturers before using this product. To use the cleaner, loosen the hose between the air intake system and the turbo. Start the engine, and let it run idle at approximately 2000 rpm. Use the spray, by briefly spraying directly into the inlet of manifold multiple times. The cleaner should take effect, and make the engine run more smoothly. Turn off the engine and re-install the loosened hose.