TOP TIER™ gas is gasoline (and also diesel fuel when applicable) that has been certified to meet specific performance standards. A group of automakers — Volkswagen, Toyota, Honda, General Motors, BMW, ...

Top Tier gasoline contains more effective detergents than federally required, which helps clean fuel injectors and reduce harmful carbon deposits inside the engine. Clogged fuel injectors and carbon ...

An analysis by AAA reveals that gas with detergent additives can keep an engine running smoothly By Jeff S. Bartlett Not all gasoline is created equal. There’s plain old regular, and then there’s ...

According to AAA, Top Tier gas "likely" keeps your engine cleaner for an extra three cents a gallon. But its study is based ...

Costco sells a huge quantity of gas each year to its members, who have all paid a membership fee for the privilege of purchasing gasoline at prices which are usually much lower than those found at ...

My question is about gasoline. The conventional wisdom I’ve always heard is that brand-name gas (Chevron, Shell, etc.) is better for your engine than what is sold at discount/mom-and-pop gas stations.

Consumer Reports explains that gasoline “is essentially a shared commodity, often stored in common containers until it is purchased by a major retailer. After that, the retailer treats the gas with a ...

Learn why at least nine major automakers recommend using Top Tier gasoline to prevent costly repairs and maintain optimal engine performance over time.