The original oil is the one used for Honda 1.5T, with the oil model being 5W-30. In terms of applicability, the original oil is more suitable for the engine. However, depending on different needs, oils can have other functions, such as noise reduction, fuel efficiency, and power performance. Therefore, you can also choose oils from brands like Mobil, Shell, and Castrol. The viscosity of the 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 for the car. The latter number represents the kinematic viscosity of the oil at 100°C. The higher the value, the better it can maintain viscosity at high temperatures, which can also be understood as better lubrication performance under high temperatures. The method for changing the oil in a Honda 1.5T is as follows: Wait for the engine temperature to drop, and also allow the oil to flow back to the oil pan; use a wrench to loosen the oil drain plug, and use 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 flow out; use a special wrench to remove the oil filter; apply oil to the oil 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, generally filling up to three-quarters of the oil can; start the engine and let it run for 5 minutes, then check for any oil leaks at the oil drain plug and oil filter, and repair if necessary; after stopping the engine, pull out the oil dipstick and check that the engine oil is within the standard range.
