In the United States, 76, Aloha, ARCO, Beacon and BP provide the best gasoline for automobiles. This is determined by Top Tier Gasoline and is used to judge brands that provide detergent gasoline.
By using a gas with quality detergent additives, drivers can ensure their car doesn't suffer from a build-up of deposits on their intake valves and fuel injectors. When deposits build up, they can lead to problems such as valve sticking. When things like this happen, they make engines sluggish and unresponsive.
Some brands of gasoline that are good for engines include Chevron, Conoco, Diamond Shamrock and Exxon.