​TOP TIER™ Detergent Gasoline is the premier standard for gasoline performance, endorsed by seven of the world’s top automakers – BMW, General Motors, Honda, Toyota, Volkswagen, Mercedes-Benz and Audi.

Why Top Tier?
• TOP TIER Detergent Gasoline helps drivers avoid lower-quality gasoline that can leave deposits on critical engine parts, which reduces engine performance.
• TOP TIER Detergent Gasoline contains significantly higher levels of detergent to help keep a vehicle’s intake system clean, improve mileage, reduce emissions, provide unsurpassed anticorrosion protection and maintain a vehicle’s engine for peak performance.
• The TOP TIER program is not just about a high detergency rate. It is about an engine cleanliness and performance specification.

How can I find out more about TOP TIER?
• Visit the TOP TIER website at (After clicking on the link, you will be leaving Valero is not responsible for content or privacy policies on other sites.)