What is the engine oil specification for BYD Song?

[LeJuliette]

BYD Song uses fully synthetic engine oil with the specification 5W-40. Turbocharged engines require at least 5W-30 oil, while some high-performance turbocharged engines can use 5W-40 oil. For later maintenance and oil changes, you can choose brands such as Mobil, Shell, Castrol, or Total. The viscosity of engine oil changes with temperature, so special attention should be paid to its performance under both low and high temperatures. For example, in 5W-30, the first number indicates low-temperature fluidity—5W means it can withstand temperatures as low as -30°C. The smaller this number, the better the low-temperature fluidity, making cold starts smoother. The latter number represents the kinematic viscosity of the oil at 100°C. A higher value means the oil can maintain viscosity better at high temperatures, which can also be understood as better lubrication performance under high-temperature conditions. The method for changing the engine oil in a BYD Song is as follows: Wait for the engine temperature to drop and allow the oil to flow back into the oil pan. Use a wrench to loosen the drain plug and place an oil pan underneath to catch the old oil until it stops flowing. Start the engine and let it run for 30 seconds to allow the oil in the main oil passage to drain out. Use a special wrench to remove the oil filter. Apply oil to the seal of the new oil filter and tighten it clockwise by hand. Add new oil through the engine valve cover filler port. Typically, fill about three-quarters of a standard oil container. Start the engine and let it run for 5 minutes, checking for leaks around the drain plug and oil filter. If leaks are found, perform necessary repairs. After stopping the engine, pull out the dipstick and check that the engine oil level is within the standard range.

[RhettDella]

I've been driving the BYD Song for almost two years now, and I always pay special attention to engine oil selection during maintenance, as it directly impacts engine lifespan and fuel consumption. Based on the official manual and my experience, I recommend SAE 5W-30 full synthetic oil, which is particularly suitable for DM-i hybrid models. It provides moderate viscosity during cold starts, ensuring quick lubrication to reduce wear, while offering strong protection during high-temperature driving. I've tried different brands like Mobil or Shell, and their quality is reliable. Avoid using incorrect specifications such as 10W-40, as it may lead to increased fuel consumption or noise issues. For city driving, the dealership recommends an oil change every 8,000 kilometers, along with a filter replacement to prevent impurity buildup. I've also noticed that in cold regions, choosing 5W-30 with good low-temperature fluidity helps prevent startup delays—a point many fellow Song owners agree on during discussions. Regularly check oil levels and color to ensure safe driving, and never overlook these details to avoid bigger issues.

[DeElena]

I often ponder automotive technical knowledge, and engine oil specifications are crucial for engines. The BYD Song typically uses 0W-20 or 5W-30 synthetic oil, where the numbers indicate viscosity grades: the first digit, like 0, represents excellent low-temperature fluidity, making it suitable for winter; the second digit, like 30, indicates strong high-temperature protection. The Song's design optimizes energy efficiency, with low-viscosity oil reducing friction, saving fuel, and extending component lifespan. Full synthetic oil has fewer impurities, and my several test results have been stable. Remember to choose brands with API SN certification to avoid counterfeit risks. When changing the oil, opt for professional service shops and replace the oil filter simultaneously. If driving conditions vary significantly, such as long-distance trips or city traffic jams, it's advisable to check the oil quality every 5,000 kilometers, not exceeding the manual's recommendations.

[GraceLee]

I use a BYD Song for school runs, and 5W-30 synthetic oil is perfectly adequate as stated in the manual—simple and straightforward. Avoid other grades to prevent engine damage. At reputable service centers, mechanics adhere to this standard, ensuring safety and peace of mind. Regular maintenance keeps engine noise minimal and fuel consumption stable. Incorrect oil may cause vibrations or increased oil burning. I routinely check oil levels, glancing at dashboard alerts before each drive.