What type of oil should be used for the Buick Regal?
3 Answers
The Buick Regal uses 5W30 engine oil. Compared to 5W40 and 5W30, the low-temperature fluidity is the same, but the high-temperature performance differs. 5W40 has higher viscosity, providing better high-temperature protection and sealing performance. However, the increased viscosity results in greater engine resistance and higher fuel consumption. For the Regal's engine, 5W30 is more suitable. Additional details are as follows: Note 1: Depending on the vehicle configuration, the factory-fill oil for the Buick Regal is either dexos engine oil or engine oil that meets GM6094M or GM4718M standards. When changing the oil, if the engine oil filler cap has the dexos logo, it is recommended to use engine oil with the dexos certification mark. Note 2: The Buick Regal is suitable for engine oil identified by the dexos certification mark. Look for and use engine oil displaying the dexos certification mark with the correct viscosity grade, or engine oil that meets General Motors GM6094M standards and is certified by the American Petroleum Institute (API) with a viscosity grade of SAE5W-30. For vehicles equipped with a Turbo engine, use engine oil that meets General Motors GM4718M standards and is certified by the API with a viscosity grade of SAE5W-30.
I've been driving a Buick Regal for over five years, always using 5W-30 full synthetic oil. This grade perfectly matches the engine requirements, keeping the car running smoothly and quietly. The manual recommends this exact standard, and I change the oil every 5,000 kilometers or six months. During routine car washes, I quickly check the dipstick to ensure the oil level is within the marked range and the color remains clear—never waiting until it turns black before changing. During significant weather changes, like cold winters and hot summers, the 5W-30 viscosity ensures smooth oil flow, preventing hard starts or wear. Once, I tried cheaper oil at a repair shop, and the engine noise increased—only reverting after switching back. Choosing high-quality oil not only protects the engine's lifespan but also saves fuel and reduces malfunctions. An extra reminder: always buy from reputable brands to avoid cutting corners. The Regal drives steadily, and with proper maintenance, it can last longer and save money.
I have some experience in car maintenance. The Buick Regal is suitable for 5W-30 full synthetic engine oil because its moderate viscosity reduces engine friction during cold starts and prevents oxidation during high-temperature operation. The manuals for different model years of the Regal generally recommend this grade, so it's best to check your car's specific requirements before use. Regular oil changes are crucial—do it every 7,500 kilometers or so to avoid carbon buildup that can degrade performance. For daily checks, park on level ground and pull out the dipstick to check the oil level. Choosing the right oil can extend engine life and reduce repair hassles. If budget allows, opt for certified oils like API SP for better performance. An extra tip: watch for oil leaks from seals, as hassle-free maintenance ensures safe driving.
