What is the original engine oil specification for the Sail 3?
2 Answers
The official manual for the Sail 3 recommends using engine oil with a specification of 5W-30. It is advised to use fully synthetic oil of SM or SN grade. For subsequent maintenance and oil changes, you may choose brands such as Mobil, Shell, Castrol, or Total. The viscosity of engine oil varies with temperature changes, 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 low temperatures down to -30°C. The smaller this number, the better the low-temperature fluidity, resulting in smoother cold starts for the vehicle. The latter number represents the kinematic viscosity of the oil at 100°C. A higher value 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 engine oil in the Sail 3 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; 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 engine oil through the oil filler cap on the engine valve cover, typically filling 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 drain plug and oil filter. If leaks are found, repairs should be made; After stopping the engine, pull out the oil dipstick to check that the engine oil level is within the standard range.
I've been driving my Sail 3 for several years now, and the manufacturer clearly recommends using SAE 5W-30 oil in the manual. This viscosity works great for the engine - quick starts in cold weather and decent fuel efficiency in hot conditions. Remember not to casually switch to 10W-40, as it increases friction and makes the throttle feel heavy. During maintenance, I always insist on using synthetic oil - Shell or Castrol are good choices with moderate pricing. I change both the oil and filter every time, and check the dipstick every few thousand kilometers to maintain proper oil level. It helps extend engine life - don't try to save money here. Environmental changes don't affect much, but in dusty areas change oil earlier. Twice a year is sufficient - don't delay as it may cause carbon buildup clogging the pipes.
