Best Gas for Performance, Mileage, Cost ?

BanningZ

What does TOP TIER actually mean if anything. Is this kind of like the USDA? Or is it more like "The Dairy Counsel"?

They have "standards", but is that just another way of saying that those companies can afford to buy into the union/organization?

BP and Exxon mobil are good companies, and though we don't have Sunoco's here, I have heard their gas is good. Does being left off the tier list really mean anything?

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MB 06' Nismo VQ40DE

scorpion90

Maybe this will help;

Why TOP TIER

The intention of the TOP TIER Detergent Gasoline standards is to create a winning situation for gasoline retailers, auto manufacturers and drivers. Currently, many gasoline retailers provide fuels with lower-quality additive packages that can build up deposits on fuel injectors and on intake valves. Others can build up deposits in combustion chambers and may lead to intake valve sticking. These lower levels of additives can have negative impacts on engine performance and vehicle responsiveness.

Top Tier Detergent Gasoline

TOP TIER Detergent Gasoline is the premier standard for gasoline performance. Six of the world's top automakers, BMW, General Motors, Honda, Toyota, Volkswagen and Audi recognize that the current EPA minimum detergent requirements do not go far enough to ensure optimal engine performance.

Since the minimum additive performance standards were first established by EPA in 1995, most gasoline marketers have actually reduced the concentration level of detergent additive in their gasoline by up to 50%. As a result, the ability of a vehicle to maintain stringent Tier 2 emission standards have been hampered, leading to engine deposits which can have a big impact on in-use emissions and driver satisfaction.

These automakers have raised the bar. TOP TIER Detergent Gasoline help drivers avoid lower quality gasoline which can leave deposits on critical engine parts, which reduces engine performance. That’s something both drivers and automakers want to avoid.

jimz68

Do a Google Search on "top tier gasoline hype".
Interesting stuff. "Top Tier" = Marketing Hype.

IMHO, of course.

Jim