![]() ![]() AAA says you can reverse some of the damage by making the switch to Top Tier gasoline. If you haven’t been using high quality gasoline, it’s not too late to start. Kirkland Signature – Diesel (select locations only)ĭon’t see your gas station on this list? Check for the Top Tier logo on display at the service station or ask an employee.Fast Stop Express – Diesel (select locations only).Fast Stop – Diesel (select locations only).The next major suppliers are the Marathon Refinery in Mandan ND, and BP in Whiting Indiana via its own pipeline. The next one is a Marathon refinery, but Marathon is not a big gas name in this market - they primarily sell to Speedway. Costco Wholesale Costco Wholesale – Diesel (select locations only) MNgopher said: The major refinery here is Flint Hills Resources.Co-op Premium Diesel (select locations only) Gas brands can participate and get a TOP TIER license if they meet certain standards, which includes performance tests for intake valve and combustion chamber deposits, fuel injector fouling, and intake valve sticking.Here are the Top Tier licensed retail brands, as of April 2018: Where do you find Top Tier fuel options? They’re all over! According to Top Tier, about a third of gas stations meet its fuel quality standards. “There are many who decide to buy gas only at major oil company stations believing their gas to be superior. However, you can have what the study finds is the best gas at the lowest prices.” “The most important thing about the report is that many of the nation’s giants of gas discounting sell Top Tier gasoline, including Costco and QuikTrip,” Clark said. Such carbon deposits are known to reduce fuel economy, increase emissions and negatively impact vehicle performance, particularly on newer vehicles."Įvery service station that sells Top Tier fuel must add the detergent package to all grades of gasoline.Īccording to AAA, Top Tier gasoline costs an average of three cents more per gallon, but money expert Clark Howard says it doesn’t have to be more expensive. "Among brands tested, non-Top Tier gasolines caused 19 times more engine deposits than Top Tier brands after just 4,000 miles of simulated driving. The group is now urging drivers to use a gasoline that meets Top Tier standards for engine cleanliness and performance. gasoline supplied by Valero to retail motor fuel stations bearing one of the. To be considered Top Tier, the gasoline must have a higher concentration of detergent added to it.ĪAA said it was surprised that detergent additives made such an impact on gasoline quality. Valero provides, TOP TIER quality fuels that help your engines run cleaner. Since the 1990s, the Environmental Protection Agency has required a minimum level of detergent for all gas sold, but some automakers believe the EPA standards aren’t good enough. RELATED: 8 things to know about Top Tier detergent gasolineĪAA: Why you should fill up with Top Tier gas
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