Our engine protectants include dipropylene glycol methyl ether and sodium pyrophosphate. It forms a protective layer over engine components, significantly reducing wear and extending engine life, while keeping the engine running at peak performance, reducing friction and making operation smoother. Its use method is very simple: turn off the engine, wait for cooling, check the engine oil oil level, open the fuel tank cap, pour an appropriate amount of engine flushing liquid, tighten the filling cover, start the engine, idle for a few minutes, so that the engine flushing liquid and oil are fully mixed, and drive a short distance to ensure the normal operation of the engine. And it improves fuel efficiency. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-Dadangjia