What type of oil does the Cadillac XT5 use?
2 Answers
The original factory oil brand for the Cadillac XT5 is Genuine. If you want to change the oil during later maintenance, you can choose brands such as Shell, Mobil, Castrol, or Total. The official Cadillac XT5 manual recommends the oil specification 5W40. Any oil model that meets this specification can be used. The viscosity of the oil changes with temperature, so special attention must 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 low temperatures of -30°C. The smaller this number, the better the low-temperature fluidity, making cold starts smoother. The second number represents the oil's kinematic viscosity at 100°C. A higher number means the oil can maintain its viscosity better at high temperatures, which can also be understood as better lubrication performance under high-temperature conditions. The method for changing the oil in a Cadillac XT5 is as follows: Wait for the engine temperature to cool down, allowing the oil to flow 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 no more oil flows out. Start the engine and let it run for 30 seconds to allow the oil in the main oil passage to drain. Use a specialized wrench to remove the oil filter. Apply oil to the seal of the new oil filter and tighten it clockwise by hand. Add the new oil through the engine valve cover's oil filler port. Generally, fill about three-quarters of the oil container. Start the engine and let it run for 5 minutes, then check for any oil leaks around the oil drain plug and oil filter. If leaks are found, perform necessary repairs. After stopping the engine, pull out the oil dipstick and check that the engine oil level is within the standard range.
With years of experience in car repair, I highly recommend using full synthetic oil for the Cadillac XT5, typically the 5W-30 grade with Dexos1 certification. It protects the engine, reduces wear, and prevents premature component failure—after all, it's a fine car with an engine designed for optimal lubrication and cleanliness. I also advise following the manual for regular oil changes, usually every 7,500 to 10,000 miles. Don’t wait until the oil gets dirty to change it, as engine performance may decline, and fuel consumption could increase. If you live in a cold climate, 0W-20 low-viscosity oil is a good choice for quicker cold starts. In short, using the wrong conventional or low-quality oil can lead to carbon buildup, and over time, repair costs will add up. Stick to reputable Dexos1-certified oil, and you’ll have no worries.
