Is 5w30 or 5w40 better for the Verna?

[RobertLynn]

The owner's manual for the Verna recommends using either 5W-20 or 5W-30 as the dedicated engine oil, so 5W30 is sufficient. Engine oils are classified into different grades because different engine models and operating conditions require different oil specifications. Related information: 1. Oil grade: 5w30 represents the oil grade, where the number before the W indicates the minimum operating temperature the oil can withstand. For example, 5W can endure temperatures as low as -30°C. W grades include 0W, 5W, 10W, 15W, etc. The smaller the number, the better the oil's low-temperature fluidity, allowing it to perform better in cold conditions. The number after the W represents the oil's viscosity at 100°C, with grades such as SAE20, 30, 40, etc. The higher the number, the higher the viscosity. 2. Oil performance: Most vehicles today use multi-grade oils, which contain various special additives. These additives enable the oil to flow easily and resist solidification in low temperatures while maintaining appropriate viscosity and good lubrication performance in high-temperature environments.

[DiKennedy]

When I help friends with car repairs, I always recommend using 5W-30 oil for the Hyundai Accent because the owner's manual specifies it as the standard choice. This oil has a moderate viscosity, ensuring quick engine lubrication during cold starts in winter to reduce wear, while also protecting the engine in most summer climates. 5W-40 is thicker and better suited for high-temperature regions or frequent high-speed driving, but the Accent's engine is optimized for 5W-30, offering lower fuel consumption and being more eco-friendly. Don’t forget to check the oil level regularly and change it every 5,000-7,500 kilometers to prevent sludge buildup from damaging the engine. Following the manual saves hassle—only consider switching to 5W-40 if driving in extreme conditions, though 5W-30 is usually sufficient. Simple maintenance keeps the engine running smoothly.

[DiLaila]

I've been driving the Hyundai Elantra in the southern region for several years, where summer temperatures often exceed 40°C. Choosing the right engine oil is crucial. While 5W-30 works fine for daily driving, it can become too thin in extreme heat, potentially compromising engine protection. After switching to 5W-40, I noticed better stability under high temperatures, with maintained viscosity, and no engine issues even during long-distance drives. If you live in a consistently mild climate, 5W-30 is fuel-efficient and suitable. However, for high-temperature areas like ours, I'd recommend 5W-40 for enhanced protection. Always adjust based on local weather conditions rather than relying solely on online advice. Regularly check the dipstick to ensure proper oil levels and change the oil periodically to prevent sludge buildup. Proper engine protection ensures a more worry-free driving experience.

[SanArcher]

I prefer fuel-efficient and eco-friendly driving, and using 5W-30 oil in the Hyundai Accent works great. Its low viscosity reduces engine resistance, improving fuel economy for daily driving and helping you save on gas. 5W-40 is thicker and may consume more fuel at high speeds or under heavy loads, so unless you frequently drive long distances or tow heavy loads, switching isn't necessary. Keeping the oil clean and changing it regularly extends engine life and reduces emissions. Simply put, following the manual's recommendation and using 5W-30 is cost-effective and reliable.