Are oil additives really worth it—or are they just another marketing trick? In this video, we reveal the truth about oil additives mechanics keep secret, after testing dozens of popular brands and seeing what really happens inside your engine. The results may shock you. Many drivers pour in additives hoping for smoother performance, less noise, or better fuel economy. But not all products are created equal. Some actually harm your engine by disrupting the oil’s chemistry, thickening viscosity, or clogging filters. We’ll break down the real science behind oil additives and show which ones work—and which ones are a waste of money. You’ll learn professional engine oil tips used by mechanics to reduce wear, improve lubrication, and extend engine life. We’ll also uncover the engine protection additives that truly deliver results under high mileage, heat, and pressure. For DIY enthusiasts, we’ll share simple car maintenance advice on how to use oil treatments correctly, when to skip them, and what to watch out for in marketing claims. Plus, we’ll go over proven car repair prevention methods that keep your engine running strong without unnecessary additives. After years of testing and thousands of miles, we’ll show you the truth every mechanic knows—but few will tell you. Don’t waste money on products that do nothing. Learn what really works to protect your engine and boost performance for years to come. #CarMaintenance #EngineCare #OilAdditives