As gasoline direct injection (GDI) engines have become the most common fuel injection technology on global roadways, fuel additization needs to better reflect their unique operational needs, from injector cleanliness and cleanup to particulate matter generation and pre-ignition safety.

The new TOP TIER™+ standard raises expectations beyond traditional deposit control through fuel performance tests specific to the GDI market. They evaluate a fuel’s ability to contribute to greater injector cleanliness, while also addressing critical criteria including particulate matter generation and pre-ignition safety.

Here, you can navigate directly into TOP TIER™+ gasoline resources, the How It Works library and educational webinars, fuel specification insights and seek answers to the most frequently asked questions on the new standards.

Fuels Specifications