Our engine wear protectors include dipropylene glycol methyl ether and sodium pyrophosphate. It forms a protective layer on engine components significantly reducing wear and extending engine life while keeping the engine running at optimum performance reducing friction and making operation smoother. 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 engine oil are fully mixed; 4. Drive a short distance to make sure the engine is running properly. Experience a quieter engine without advanced noise reduction formulas that minimize engine noise and vibration.