Our engine protectants include dipropylene glycol methyl ether and sodium pyrophosphate. It can reduce the maintenance cost and extend the maintenance period; Increase engine power output and improve driving experience. Its use method is very simple: 1. Turn off the engine and wait for cooling. Check engine oil level; 2. Open the oil filler cap pour an appropriate amount of engine booster and maintenance agent and tighten the filler cap; 3. Start the engine idling for a few minutes so that the protectant and oil are fully mixed; 4. Drive a short distance to make sure the engine is running properly. Improve engine stability reduce vibration and noise. Suitable for new and old engines comprehensive protection. Reduce cold start wear and protect engine health.