What is the difference between 0w20 and 5w40?

[DelKathryn]

0w20 and 5w40 are introduced as follows: 1. Different viscosity: 0w20 engine oil has a thinner viscosity and saves fuel consumption; 5w40 engine oil has a higher viscosity and consumes more fuel. 2. Different fuel consumption: 0w20 can withstand a minimum of minus 35 degrees, while 5w40 can withstand a minimum of minus 30 degrees. Engine oil starting with 0 has better cold start performance in winter than 5; 0w20 engine oil saves fuel consumption and has better cold start performance in winter compared to 5w40. 3. Different applicable car series: 0W20 is purely winter engine oil, while 5W40 is suitable for most northern regions. Moreover, most car series using 0W20 are Japanese and Korean cars, and the factory standard engine oil is 0W20. On the other hand, 5W40 engine oil is more widely available in the market and is very common and suitable for most Volkswagen models.