
Refer to the vehicle manual; the original factory oil for the Accord is SL3W/30, supplied by Tianjin Nichiyu. Below are details about engine oil: 1. The oil grade mainly consists of two parts. The first is the primary grade, such as "5W-30." The "XW" in front indicates that the lower the number, the better the oil's low-temperature fluidity, meaning it can be used in lower environmental temperatures and offers better engine protection during cold starts. For example, 5W corresponds to a minimum temperature of -30°C, 0W is -35°C, and 10W is -25°C. In extremely cold regions, 5W is the least favorable choice. 2. The number following the "W" represents the oil's viscosity at high temperatures. The higher the number, the higher the viscosity. Higher viscosity provides better engine protection but consumes more fuel, and vice versa. Different vehicles have varying viscosity requirements; for instance, Japanese cars mostly use 30, while German cars predominantly use 40.

My eighth-generation Accord has been running for almost ten years, and I've always used 5W-30 engine oil. It starts up particularly smoothly in winter, provides sufficient high-temperature protection in summer, and keeps engine noise well under control. I recommend choosing fully synthetic oil—it's more expensive but can last up to 10,000 kilometers between changes, making it more cost-effective in the long run. Both Shell and Mobil have worked well for me, but the key is to ensure it's genuine. Fake oil can damage the engine, so it's best to buy from official authorized shops. Also, pay attention to maintaining the right oil level—too much can make the engine sluggish, while too little increases wear. Just keep an eye on it during .

After working in 4S shops for so many years, the safest choice for the 8th-generation Accord is 0W-20 or 5W-30 engine oil. The manufacturer requires the viscosity not to exceed 30, and the certification must meet API SN level or above. For older cars with over 150,000 kilometers, using 5W-40 can appropriately reduce oil consumption. Remember to use 0W-grade oil when temperatures are below freezing for better cold-start protection. Full synthetic oil is more expensive than mineral oil, but its cleaning and oxidation resistance are far superior. Don't blindly trust those niche brands—market-proven products like Castrol Edge and Idemitsu from major manufacturers are more reliable.

My colleague has tried several types of engine oil for his 8th-generation Accord. The 5W-30 performs best overall, suitable for all seasons and fuel-efficient. Semi-synthetic oil offers good value for money, perfectly adequate for city commuting, and only needs changing every 5,000 to 6,000 kilometers. Remember to check for the GF-5 certification on the oil container, specifically designed for Japanese cars to protect the engine camshaft. Last time, he bought a cheap, no-name oil, which resulted in noticeable idle vibration. It's recommended to verify the anti-counterfeit code when purchasing online, and it's best to get an invoice and keep records when from physical stores for easier rights protection in case of issues.

Just finished the for my father-in-law's Accord. The mechanic emphasized the importance of using genuine 5W-30 oil, especially in southern regions. Higher viscosity oil provides better protection in high-temperature environments and helps prevent rubber oil seal aging. It's recommended to choose oil with ACEA A5/B5 standards, specifically formulated for Japanese engines. Don't be fooled by the dealership into adding any cleaning agents; regular oil changes are the most practical. Also, don't skimp on the oil filter—Mann or OEM filters are the best match, as low-quality filters can directly contaminate the new oil.

According to the official manual, the 8th-generation Accord prioritizes the use of 0W-20 low-viscosity engine oil, which is labeled in the manual to improve fuel economy by 3%. This is especially suitable for owners in northern regions, as it ensures smooth starts even at -25°C. The newly introduced SP-grade oil offers better chain protection compared to the older SN-grade, making it more suitable for direct injection engines. If you frequently drive on highways or have an older vehicle, switching to 5W-30 is more reliable. During maintenance, ask the technician to check the valve cover gasket, as oil leakage here can contaminate the engine oil.


