COVID-19: Learn more about what ARCO is doing to protect employees and customers. ARCO Value Payment Options Say Hello Station Near You Locating... Frequently Asked Questions Your questions and comments are important to us. Browse through our frequently asked questions below. About ARCO's Quality TOP TIER™ Gas What is TOP TIER™ gas? What do different octanes mean? Which cars should use premium gas? Are over-the-counter fuel-additive treatments beneficial to my car's performance? What about using ethanol-blended gasoline in smaller engines, motorcycles, snowmobiles and boats? I have more questions about ARCO gasoline. Where can I get more information? How is ARCO gasoline affiliated with Tesoro Corporation? Payment & Card Questions What are some of ARCO’s convenient payment options? Why is there a 35 cent convenience fee for the user of PIN debit cards? What is Mobile Wallet? How does Mobile Wallet work? How do I use Mobile Wallet? Are Mobile Wallet payments secure? Does this change the type of payment methods that are accepted? What Mobile Devices allow for Mobile Wallet payment? Additional Information Are there ARCO stations throughout the United States? How is ampm affiliated with Tesoro Corporation? FAQs About Tracking Supply Chain Transparency Terms of Use Privacy Policy Site Map ampm ampm franchise ARCO México Español Back to Top © 2021 Tesoro Refining & Marketing Company LLC

COVID-19: Learn more about what ARCO is doing to protect employees and customers. ARCO Value Payment Options Say Hello Find A Station Site Map Home ARCO Value Payment Options Say Hello Find A Station Faqs About Tracking Supply Chain Transparency Terms of Use Privacy Policy FAQs About Tracking Supply Chain Transparency Terms of Use Privacy Policy Site Map ampm ampm franchise ARCO México Español Back to Top © 2021 Tesoro Refining & Marketing Company LLC