How to Choose Full Synthetic Engine Oil?
2 Answers
Taking "5W-30" as an example, look at the oil's grade, specifically the "5W". Here, W stands for Winter. The smaller the number before the W, the better the oil's low-temperature fluidity, indicating it can be used in lower environmental temperatures and offers better protection for the engine. The number after the "W" represents the oil's viscosity at high temperatures. A higher number means higher viscosity, which provides better engine protection but consumes more fuel.
Before switching to full synthetic oil, I need to check the recommended specifications in the car's manual, such as the SAE viscosity index. For northern winters, 5W-30 is the best choice due to its good anti-freeze properties, which prevent starting difficulties. For my daily-driving family car, I prefer well-known brands like Shell or Mobil for full synthetic oil. Although more expensive, they offer better engine protection with less wear and can extend the oil change interval up to 10,000 kilometers, saving both money and hassle. Avoid no-name brands, as they may lack sufficient additives, leading to increased carbon buildup. From my experience, driving habits influence the choice—if I frequently encounter traffic jams or drive on highways, I opt for higher viscosity oils like 0W-40 for better high-temperature resistance. Also, check the API or ACEA standards to ensure compatibility with your engine type and avoid oil consumption issues. Overall, full synthetic oil provides superior lubrication, extending engine life, so don’t just go for the cheapest option and neglect proper maintenance.
