Should Mazda6 use 5w30 or 5w40 engine oil?
2 Answers
Mazda6 uses 5w30 engine oil. Below are the relevant introductions about engine oil: 1. Reduce wear: There is rapid relative sliding between the piston and cylinder, as well as between the main shaft and bearing bush. To prevent excessive wear of parts, an oil film of sufficient thickness needs to be established between the two sliding surfaces to separate the relatively sliding parts, reducing wear and extending mechanical life. 2. Cooling: Engine oil helps the radiator cool the engine and expels heat from the engine. 3. Sealing and leak prevention: Engine oil can form a sealing ring between the piston ring and piston, reducing gas leakage and the entry of pollutants. 4. Shock absorption: When the pressure at the engine cylinder port rises sharply, suddenly increasing the load on the piston, piston chips, connecting rod, and crankshaft bearings, this load is transmitted and lubricated through the bearings, cushioning the impact load.
When it comes to my Mazda6, I always use 5w30 engine oil because it's more suitable for daily use. The low viscosity of 5w30 makes it easier to start in winter, and the engine responds quickly. The Mazda manual recommends this grade, with 5w indicating good low-temperature fluidity and 30 representing moderate protection at high temperatures. I've tried 5w40, which feels more stable during intense driving, but it's unnecessary for daily city driving as it may increase fuel consumption and noise. Pay attention to oil quality during regular oil changes, and synthetic oil is a better choice. Just make slight adjustments in areas with large temperature variations, and avoid frequently switching back and forth. Total length: 165 words.
