How to Choose Full Synthetic Engine Oil?
1 Answers
Taking "5W-30" as an example, look at the oil's grade, specifically the "5W". Here, W stands for Winter. The smaller the number before the W, the better the oil's low-temperature fluidity, indicating it can be used in lower environmental temperatures and offers better protection for the engine. The number after the "W" represents the oil's viscosity at high temperatures. A higher number means higher viscosity, which provides better engine protection but consumes more fuel.