Is Engine Repair Additive Useful?
2 Answers
Engine repair additive is useful. Additional information: 1. Main functions of the repair additive: The repair factors in the additive work on the worn parts of various metal components inside the engine and form a protective metal film on the surfaces. 2. This protective film not only prevents metal wear but also enhances cylinder pressure. The increased thickness of the protective film between metals reduces gaps, thereby improving sealing performance and alleviating engine oil burning issues. 3. Symptoms such as engine overheating, increased fuel and oil consumption, reduced power output, and difficulty in cold starts may occur. At the same time, due to deteriorating lubrication conditions, friction between engine components intensifies, wear accelerates, and clearances further increase, leading to abnormal fitting relationships, increased engine noise, worsened operational stability, and in severe cases, necessitating an engine overhaul.
I've used engine repair additives on a few old cars before, and I feel they do help somewhat, especially when the car has some years on it. For example, when there's slight engine wear, adding the additive reduces noise, makes driving smoother, and slightly improves fuel consumption. This stuff mainly works by chemically filling tiny gaps to reduce friction, but don't expect it to fix major issues like severe internal part damage or serious oil leaks. From my experience, a small bottle can show effects on older cars, but if the car's condition is too poor, it still needs professional repair. The key is not to rely on it—routine maintenance like oil changes and inspections are the real solution, with the additive just being a temporary aid. Anyway, it's not expensive, just a few dozen yuan per bottle, and you won't know if it suits your car until you try it.
