Manufacturers reformulate to meet new passenger car motor oil (PCMO) standards.
![](https://carsonteam.com/wp-content/uploads/2020/10/Header_GF-6-Oil-Standards-1024x536.jpg)
The change is more than package-deep. New GF-6 PCMO requirements means that oil manufacturers are changing what’s inside too. Find out what this means for your passenger car.