
The Refine S3 is suitable for 10W30 SJ grade engine oil. Engine oil, also known as engine lubricant, serves multiple functions including lubrication and wear reduction, auxiliary cooling, sealing and leak prevention, rust and corrosion protection, and shock absorption. The Refine S3 has a body size of 4345mm in length, 1765mm in width, and 1640mm in height, with a wheelbase of 2560mm and a fuel tank capacity of 45 liters. It is equipped with a 1.5L naturally aspirated engine, delivering a maximum power of 85 kW and a maximum torque of 150 Nm, paired with a 6-speed manual transmission. The front suspension is a MacPherson strut independent suspension, while the rear suspension is a torsion beam non-independent suspension.

I previously researched the engine oil options for the JAC Refine S3. The user manual recommends using 5W-30 synthetic oil, such as API SN-grade 5W-30 full synthetic oil, which is most suitable. It maintains good fluidity under various temperatures, protecting the engine and reducing wear, especially during cold starts. Based on my experience, 5W-40 synthetic oil can also be used as a backup, particularly for long-distance driving or in high-temperature regions, but 5W-30 offers better fuel efficiency. Choose a reputable brand like Shell or Mobil, and avoid cheap mineral oils to prevent carbon buildup issues. The oil change interval is recommended every 5,000 to 8,000 kilometers, along with replacing the oil filter to ensure smooth and safe operation. Regular maintenance can extend the engine's lifespan and avoid costly major repairs later, making it truly worthwhile.

My JAC Refine S3 has been running for five or six years, and I've always used 5W-30 semi-synthetic oil. The engine feels quiet, and the fuel consumption is decent. If I drive more on highways or during hot summers, I occasionally switch to 5W-40, which is thicker and offers better protection. Remember to check the manual—API SN grade is usually sufficient, so don’t buy the wrong one. Changing the oil yourself is fine; just find a clean spot and replace it every 5,000 kilometers. Don’t delay too long, or the oil will degrade and affect performance. When choosing oil, don’t just look at the price—genuine products are the most reliable. Domestic brands like Great Wall oil are also good. Keep an eye on the temperature gauge; the right oil can help your car last longer. Saving hassle and money is what I value most.

I tried using 5W-30 synthetic oil for my JAC Refine S3, and the results were great - faster engine response and reduced noise. The manual states this grade is the best fit, with 5W-40 as an alternative. Synthetic oil performs better for daily driving, preventing high-temperature damage. Recommended oil change interval is every 5,000 kilometers, paired with a quality filter. Never compromise on oil quality - always choose reputable brands for safety.


