Should a new turbocharged car use 5w30 or 40?
2 Answers
Both 5w30 and 40 are suitable for new turbocharged cars. Turbocharged engines operate under high temperatures and pressures, requiring higher viscosity engine oil to provide adequate lubrication. Effects of low oil viscosity: During normal engine operation, oil forms a protective film on engine components to reduce wear. If the oil viscosity is too low, it cannot form a stable protective film, which accelerates engine wear. Advantages of turbocharged engines: When properly matched and operating under positive boost pressure, they can reduce emissions and exhaust noise while significantly increasing power output with minimal size increase. Disadvantages include slower acceleration response and less linear/smooth operation.
I've driven a turbocharged car for ten years. When I got the new car, the first thing I did was check the user manual—it's like a compass. For example, 5w30 and 40: 30 provides smoother cold starts in winter, while 40 offers better protection in high temperatures or during long highway drives, especially suitable for turbocharged engines in hot conditions. My car is the turbo version, and the manual recommends 5w40, so I've always used it—no worries about overheating in summer. Don’t listen to random advice; new engines are precise, and oil choice depends on climate: use 30 in cold regions for fuel efficiency, and 40 in hot areas for reliability. Regular oil changes are crucial—I check oil quality every 5,000 km to keep it clean and extend engine life. When checking oil levels yourself, ensure it's neither too high nor too low—safety first. Always follow the manufacturer’s instructions and avoid experimenting with different oils.
