What type of engine oil should be used for turbocharged engines?
2 Answers
Turbocharged engines use fully synthetic engine oil with a viscosity of 40, while some turbocharged engines require fully synthetic engine oil with a viscosity of 60. Engine oil is referred to as the lifeblood of the engine, as it not only lubricates but also cleans, seals, cushions, prevents rust, and dissipates heat within the engine. Without engine oil, the engine cannot function properly. The turbocharger is essentially an air compressor that increases air intake by compressing air. It utilizes the inertial force of exhaust gases expelled by the engine to drive the turbine in the turbine chamber, which in turn drives the coaxial impeller. The impeller then pressurizes the air delivered through the air filter pipe, forcing it into the cylinders under increased pressure.
As a seasoned car enthusiast with a decade of experience dealing with turbocharged vehicles, I deeply understand the importance of engine oil. Turbos operate at extremely high speeds, with temperatures exceeding 100°C, which ordinary mineral oils can't withstand—they oxidize and break down easily, leading to severe turbo bearing wear and major repairs. I always use full synthetic oil, opting for viscosities like 5W-40 or 0W-30 (as specified in the manual) that meet the latest API standards such as SN or SP. Here’s a hard lesson: in my younger days, I cheaped out with semi-synthetic oil, and the car developed abnormal noises during acceleration, nearly ruining the turbo. So, regular oil level checks are a must—turbocharged engines consume more oil than naturally aspirated ones. I change the oil every 5,000 km to keep the system clean. Investing in quality oil pays off big: choose reputable brands like Mobil or Shell, and low-ash formulations to reduce carbon buildup, extending engine life and ensuring smooth power delivery. Remember, never skip replacing the oil filter simultaneously—it makes overall maintenance much easier.
