What Type of Oil is Suitable for Turbocharged Engines?
2 Answers
Turbocharged engines require full synthetic oil. The reasons for using full synthetic oil and its characteristics are as follows: Reasons for using full synthetic oil: Compared to naturally aspirated engines, turbocharged engines generate more powerful output and greater horsepower during operation. Consequently, the internal components of turbocharged engines experience relatively higher wear and require superior lubrication, making full synthetic oil more suitable. Characteristics of full synthetic oil: Full synthetic oil offers excellent high and low-temperature performance, superior flow properties, a longer oil change interval, and is suitable for more demanding driving conditions, providing optimal engine protection.
Last time during maintenance, the technician specifically reminded me that when choosing oil for turbocharged cars, three points are crucial: high-temperature protection, cleanliness, and shear resistance. My turbocharged engine's turbine speed can easily soar to 200,000 RPM, which ordinary mineral oil simply can't handle. Nowadays, I only use fully synthetic oils with ACEA C2/C3 or API SP certifications, like 5W-30. This low viscosity ensures quick lubrication of the turbo bearings while maintaining a robust oil film under high temperatures. Recently, I switched to Shell Helix Ultra, and after 5,000 kilometers, the turbo lag has noticeably improved, and there's less carbon buildup in the exhaust pipe. Remember, never skimp by using semi-synthetic oil—high-temperature carbon deposits can clog the turbocharger's oil passages.
