Short Answer: ARCO, a subsidiary of Marathon, is a TOP TIER licensed fuel retailer, meaning it sells some of the highest quality gasoline available. This type of gas contains detergent additives that are good for your car’s engine. For more about ARCO’s gas quality, see below.
ARCO Gas Quality Explained
ARCO is a TOP TIER licensed retail brand in the U.S, Mexico, and Canada. This means all ARCO gasoline grades must be treated with an approved blend of detergent additives that have been proven to benefit car engines and maximize fuel efficiency. ARCO is a subsidiary of Marathon Petroleum Corporation, which is another TOP TIER licensed retailer. You can see the TOP TIER website for a full list of approved retailers.
TOP TIER gas was developed by a group of auto manufacturers who wanted to create a fuel blend that would help their cars perform at their highest potential. An independent study conducted by the American Automobile Association (AAA) found that vehicles using TOP TIER gas had 19 times fewer carbon deposits on injectors, intake valves, and in the combustion chamber when compared to regular gasoline. The study also found TOP TIER gas has a “cleansing effect.” AAA advises that motorists would benefit from using TOP TIER gasoline whenever possible.
Buying Gas at ARCO
ARCO has locations across the western, southwestern, and upper midwestern United States. At the pumps, ARCO accepts major debit and credit cards, prepaid gas cards, the ARCO Fleet Card, and your smartphone’s Mobile Wallet (including Apple Pay, Google Pay, and Samsung Pay). ARCO is also regarded as a low-priced gas retailer despite the high quality of its fuel.
If there are no ARCO gas stations in your area but you still want to fill up with TOP TIER gas, we have the information about other TOP TIER licensed retailers, including 76, Mobil, Sunoco, and Valero.