What is the recommended engine oil specification for Buick Excelle maintenance?
2 Answers
Buick Excelle 1.4T models use Mobil 1 5W-30 full synthetic oil as original equipment, while the 1.5L models use OEM 5W-30 semi-synthetic oil with an approximate filling volume of 3.7L. For subsequent maintenance oil changes, you may choose brands such as Mobil, Shell, Castrol, or Total. The viscosity of engine oil varies with temperature changes, so special attention should be paid to its performance under both low and high temperature conditions. Taking 5W-30 as an example, the first number indicates low-temperature fluidity - 5W represents the oil's capability to withstand -30°C low temperatures. A smaller number indicates better low-temperature fluidity, resulting in smoother cold starts for the vehicle. The latter number represents the oil's kinematic viscosity at 100°C - higher values indicate better ability to maintain viscosity under high temperatures, which can also be understood as superior lubrication performance in high-temperature conditions. The oil change procedure for Buick Excelle is as follows: Wait for the engine temperature to decrease, allowing the oil to fully drain back to the oil pan; Loosen the drain plug with a wrench and collect the used oil in a drain pan until no more oil flows out. Start the engine and let it run for 30 seconds to allow oil in the main oil gallery to drain; Remove the oil filter using a special wrench; Apply oil to the seal of the new oil filter and hand-tighten it clockwise; Add new oil through the filler cap on the engine valve cover, typically filling about three-quarters of a standard oil container; Start the engine and let it run for 5 minutes, then check for leaks around the drain plug and oil filter. Address any leaks if found; After stopping the engine, pull out the dipstick to verify the oil level falls within the standard range.
I've been driving a Buick Excelle for several years, and I also wondered about the right oil grade when I first bought it. The mainstream grades for this car are 5W-30 or 0W-20, depending on the specific model year. For example, older 1.5L engines may lean toward 5W-30, while newer 1.3T engines are better suited for 0W-20. It's best to choose oil with Dexos certification, which meets Buick's requirements and protects the engine from wear. Seasonal changes also affect usage: in high-temperature summer regions, a higher viscosity oil like 5W-30 is preferable, while in colder winter areas, 0W-20 ensures better flow and quicker starts. I always insist on maintenance at the dealership, where they use genuine oil to avoid counterfeit products from outside sources. Don’t underestimate this—using the wrong oil can lead to increased fuel consumption or engine noise, and in severe cases, it may shorten the car's lifespan. So, before servicing, check the owner’s manual or confirm the grade with the dealer, and stick to regular oil changes every 5,000–10,000 kilometers.
