What is the best engine oil for Audi A6?
1 Answers
Audi A6's original engine oil specification is: 5W-40 full synthetic oil. If you want to change the oil during later maintenance, you can choose brands like Mobil, Shell, or Castrol, with oil specifications of 5W40 or 0W40. Any oil model that meets these two specification parameters can be used. The viscosity of engine oil changes with temperature, so special attention should be paid to its performance under 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 latter number represents the kinematic viscosity of the oil at 100°C. The higher the value, the better it maintains viscosity under high temperatures, which can also be understood as better lubrication performance under high-temperature conditions. The method for changing the oil in an Audi A6 is as follows: Wait for the engine temperature to drop, allowing the oil to flow back into the oil pan; use a wrench to loosen the oil drain plug and place an oil pan 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 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 the new oil through the oil filler cap on the engine valve cover, usually filling about three-quarters of the oil can; start the engine and let it run for 5 minutes, checking for any leaks around the oil drain plug and oil filter, and repair if necessary; after stopping the engine, pull out the oil dipstick to check if the engine oil level is within the standard range.
