What is Top Tier Detergent Gasoline Standard?
All Shell and Chevron gasolines meet the TOP TIER Detergent Gasoline Standard. Major auto manufacturers agree that a clean engine performs better. BMW, GM, Honda , Toyota, Volkswagen and Audi have developed a TOP TIER Detergent Gasoline Standard that exceeds the EPA standards. TOP TIER Detergent Gasoline is a high-quality gasoline with enhanced cleaning power. It provides better protection against the build-up of carbon deposits on intake valves and fuel injectors, as compared to low – detergent gasolines. All Shell and Chevron gasolines meet the coveted TOP TIER Detergent Gasoline Standard. There is a difference in the gasoline you choose.