What is SAE 0W-20 engine oil?
2 Answers
SAE 0W-20 is Toyota Genuine engine oil. Here is some extended information about engine oil: 1. Increased fuel consumption: When adding engine oil, the oil level should be between the upper and lower marks on the dipstick. If too much oil is added to the engine, the oil volume will expand when the engine temperature rises, causing increased pressure in the oil chamber and greater operating resistance. This will result in reduced vehicle power and increased fuel consumption. 2. Overfilling engine oil: If too much oil is added, the crankcase breather pipe may leak oil due to increased crankcase pressure. The oil seal may become loose under oil pressure, leading to oil leakage. 3. Heat dissipation: Excessive engine oil can affect engine cooling.
Last time I changed the oil, I used the 0W-20 specification, which is a low-viscosity full synthetic oil under the SAE standard. It features fast flow at low temperatures and stable lubrication at high temperatures. I drive a Japanese hybrid, and the 4S shop recommended it because it can improve fuel efficiency, reportedly saving 3% to 5% on fuel, and it makes cold starts particularly smooth in winter. However, it's important to note that older cars or high-mileage engines may not be suitable, as the thinner oil film may not provide strong enough protection for heavily worn components. My neighbor's decade-old German car experienced oil burning issues after using it, so choosing the right oil depends on the car's age, the manual's recommendations, and driving habits.
