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- GS Caltex’s Kixx PRIME ranked No. 1 in the premium gasoline category of the 2026 Korean Standard-Quality Excellence Index for the second consecutive year
- Launched in April 2006, the high-octane fuel is formulated to reduce engine knock, control deposits, and limit energy loss from friction
Twenty years after its launch, GS Caltex’s Kixx PRIME has ranked first in the premium gasoline category of the Korean Standard-Quality Excellence Index (KS-QEI) for the second consecutive year. The 2026 ranking recognizes the work GS Caltex, led by CEO and GS Group Vice Chairman Saehong Hur, has put into refining the fuel and maintaining its quality since its launch in April 2006.
The Korean Standards Association administers the index, a benchmark for product and service quality in South Korea. It uses evaluations from consumers with firsthand experience and assessments by experts to measure quality and customer satisfaction.
How Kixx PRIME Helps Engines Perform as Designed
Kixx PRIME is a high-octane gasoline formulated to reduce engine knock, which occurs when fuel burns abnormally in the engine. Reducing knock helps engines deliver their intended performance and, depending on the vehicle, can contribute to smoother acceleration and a quieter ride.
The fuel also contains high-performance detergents that help control deposits inside the engine and friction modifiers designed to reduce energy loss from friction. These additives help maintain consistent engine performance over time, with the aim of delivering benefits drivers can notice in everyday use.
Testing With Automakers and Maintaining Fuel Quality
Since introducing Kixx PRIME, GS Caltex has continued to develop the fuel and refine its quality control processes, strengthening its position in the premium gasoline market. The company works with several manufacturers of high-performance vehicles to test the fuel and verify its consistency. It also works to maintain uniform quality from raw material sourcing through production and distribution.
Changsoo Kim, Executive Vice President of Mobility & Marketing at GS Caltex, credited the repeat ranking to steady improvements in fuel quality and the trust customers place in Kixx PRIME. He said the company would build on its fuel technology and product quality to deliver improvements drivers can feel on the road. GS Caltex plans to continue investing in research and development and refining its fuel quality to help improve vehicle performance and the driving experience.
