PitStop - Fact Fridays: What do the numbers on your motor oil mean? The numbers represent the viscosity of the oil and the W stands for WINTER. In a 5W-40 for example,
![oil change - How to understand different engine oils? - Motor Vehicle Maintenance & Repair Stack Exchange oil change - How to understand different engine oils? - Motor Vehicle Maintenance & Repair Stack Exchange](https://i.stack.imgur.com/gIfeL.jpg)
oil change - How to understand different engine oils? - Motor Vehicle Maintenance & Repair Stack Exchange
![Engine Oil Codes Explained, SAE (Society of Automotive Engineers) numbers - Oil Viscosity Explained - YouTube Engine Oil Codes Explained, SAE (Society of Automotive Engineers) numbers - Oil Viscosity Explained - YouTube](https://i.ytimg.com/vi/Hb6CX_rWoIA/maxresdefault.jpg)
Engine Oil Codes Explained, SAE (Society of Automotive Engineers) numbers - Oil Viscosity Explained - YouTube
![Engine Oil Codes Explained, SAE (Society of Automotive Engineers) numbers - Oil Viscosity Explained - YouTube Engine Oil Codes Explained, SAE (Society of Automotive Engineers) numbers - Oil Viscosity Explained - YouTube](https://i.ytimg.com/vi/Hb6CX_rWoIA/sddefault.jpg)