What kind of oil is suitable for turbocharged engines?
2 Answers
Turbocharged engines are recommended to use fully synthetic oil. Fully synthetic oil is a type of artificially manufactured oil that undergoes chemical decomposition of various natural substances during production, followed by synthesis with other materials to achieve the final product. It offers more stable chemical properties, better fluidity, and lower resistance, providing optimal engine protection while reducing fuel consumption. Higher viscosity oil can minimize wear and maintain good cylinder pressure. Since turbocharged engines operate at higher temperatures, using higher viscosity oil is advisable, as low-viscosity oil may damage the oil film and accelerate wear.
I'm an owner of a turbocharged car and have been driving it for several years, always using full synthetic oil like 5W-30. Turbocharged engines operate at extremely high temperatures, and conventional oil can't withstand it, thinning out and failing easily, which can damage the turbo bearings or engine. I learned the recommended viscosity from the manual, and I once had issues after using cheaper semi-synthetic oil—the engine noise increased, so I quickly switched to a professional brand's full synthetic. Now, driving on the highway feels much smoother, and I don't worry about carbon buildup or overheating protection. It's best to choose oil with API SN or higher ratings to prevent low-speed pre-ignition issues and extend engine life. Although full synthetic is more expensive, it only costs an extra hundred or so per year, which is much more economical than an engine overhaul, and the oil change intervals are longer.
