Our engine protectants contain viscosity improvers and anti-friction additives. It minimizes engine noise and vibration. Its use method is very simple: turn off the engine, wait for cooling, check the engine oil level, open the engine oil nozzle, pour an appropriate amount of engine pressurization repair agent, tighten the nozzle, start the engine, idle for a few minutes, so that the protectant and oil are fully mixed, travel a short distance, to ensure the normal operation of the engine. It can also form a protective layer on the engine components, significantly reducing wear and extending engine life, while keeping the engine running at peak performance, reducing friction and making operation smoother.