What is the recommended oil specification for the Buick Envision?
1 Answers
The factory-recommended oil for the Buick Envision is 5W30. The Buick Envision uses fully synthetic oil, which offers a wider temperature range, longer service life, and higher cost. For later maintenance and oil changes, you can choose brands such as Mobil, Shell, Castrol, and 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, resulting in smoother cold starts for the engine. The second number represents the oil's kinematic viscosity at 100°C. A higher number indicates better ability to maintain viscosity under high temperatures, which can also be understood as better lubrication performance under high-temperature conditions. The method for changing the oil in the Buick Envision is as follows: Wait for the engine temperature to cool down, allowing the oil to drain back into the oil pan. Use a wrench to loosen the oil 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 about 30 seconds to allow the oil in the main oil passages to drain out. Use a specialized wrench to remove the oil filter. Apply oil to the gasket of the new oil filter and tighten it clockwise by hand. Add new oil through the oil filler cap on the engine's valve cover, typically filling up to three-quarters of the oil container. Start the engine and let it run for 5 minutes, checking for any leaks around the oil drain plug and oil filter. If leaks are found, perform necessary repairs. After stopping the engine, pull out the dipstick to check that the oil level is within the standard range.
