👉 Unoiling is a process used in the automotive industry to remove impurities from engine oil before it is injected into the engine. This can help prevent deposits that could damage the engine and reduce fuel efficiency. The primary benefit of using unoiling is that it reduces the amount of oil needed, making the engine more efficient. In summary, unoiling refers to a process used in the automotive industry to remove impurities from engine oil before it is injected into the engine, which can help prevent deposits that could