Question: is 0w 20 oil the same as 5w20?
Answer: The letter 'W' means both varieties are suitable for cold temperatures. ... So, 0W20 means the oil's viscosity is 0 in cold temperatures and 20 at the operating temperature. The 5W20 oil is the same except for a viscosity of 5 in cold temperatures. Both oils are designed to use in cold-weather regions.