Should the Vision X3 use 5W40 or 5W30?

[VanAthena]

As long as the engine oil is genuine, either can be used. Here is the relevant information: 1. The meaning of engine oil grades: The 5W-40, 5W-30, 0W-20, etc., in engine oil represent the viscosity grade, or SAE grade. SAE is the abbreviation for the 'Society of Automotive Engineers,' which measures the low-temperature starting viscosity, low-temperature pumping viscosity, high-temperature kinematic viscosity, and high-temperature shear viscosity of automotive engine oils. 2. The main differences between 5W30 and 5W40: 5W-30 has relatively better fluidity, making it more capable of reducing fuel consumption issues and allowing the engine to dissipate heat faster and more effectively. However, for some older cars, using 5W-30 may result in slightly louder engine noise, and for engines that strictly require 5W-40, using 5W-30 may lead to higher than normal fuel consumption.

[AdelynDella]

I live in the northeast where temperatures often drop below -20°C in winter. My Emgrand X3 has been running on 5W-30 oil for years, starting quickly and smoothly even when the engine is frozen stiff. But during summer trips to the south, with scorching sun on the road, a friend suggested switching to slightly thicker 5W-40 viscosity to protect engine components and reduce wear. The Emgrand X3's factory manual recommends 5W-30 as standard, but allows flexible adjustments for extreme climates. Remember to check oil levels every 5,000 km—don't wait for the warning light to change oil. Choosing the right oil not only extends engine life but also saves significant repair costs. If you live in a mild year-round climate, sticking with 5W-30 is worry-free.

[DelElliot]

Having driven for over a decade, I used 5W-30 oil in my new Emgrand X3's engine from the start. The thinner viscosity ensured smooth oil circulation, reducing fuel consumption by 0.5L per 100km. After surpassing 100,000 km, with slightly increased engine clearances, switching to 5W-40 noticeably reduced idle noise and provided smoother, more vibration-resistant acceleration. I recommend using 5W-30 for new cars to save fuel and be eco-friendly, while high-mileage owners should consider 5W-40 for better protection. The Emgrand X3 manual clearly states 5W-30 suits most conditions—avoid unnecessary oil brand experiments. During regular maintenance, have technicians use professional tools to check viscosity requirements. Ultimately, choosing the right oil can extend your car's lifespan by years.

[EmilyRose]

As an eco-conscious driver, I paid special attention to fuel consumption when choosing the Emgrand X3. Using 5W-30 oil with lower viscosity makes the oil pump work more efficiently, saving 0.5L per 100km in city driving conditions based on actual tests. While 5W-40 offers better engine protection, it consumes slightly more fuel and produces higher emissions. The Emgrand X3 is designed to prefer the standard 5W-30 viscosity, ensuring quick engine response and fast starts. Personally, I believe following the manufacturer's recommendation is best, along with regular oil and filter changes to maintain cleanliness. It's both cost-effective and environmentally friendly.