The answer is NO so please see TOP TIER web site for the list.
Just checked the Top Tier's website, and it does not list Circle K as one of the brands the sels top tier gas, so I would guess not.
no bp, exxon mobil , shell are
Currently, Canada is in the top tier of Greenhouse Gas producers, both by population and by GDP.
If you think it is, it is. Shell is one of the companies that makes the "Top Tier" gas Volkswagen likes you to use, so it's a quality fuel...but it's probably no better or worse than the other Top Tier fuels. Check http://www.toptiergas.com for a list of companies that sell this gas.
Sheetz buys their fuel "from major refineries", per their website. They don't sell branded fuel.
Yes, see http://www.toptiergas.com/deposit_control.html for the nitty gritty details.
To say that something is 'top-tier' is to say that it is of the greatest level of quality. A example of a sentence using the phrase 'top-tier consumer' is: We are developing a plan that will market towards the top-tier consumer.
Top level
All top tier gasolines in the U.S. contain 8% Ethanol and no more than 10%. So you would have to buy gasoline that is not top tier. I do not recommend you burn such a fuel in your car.
No it's a low grade goes against gas companys like Sunoco and Getty. If you have a high end car like Mercedes do not get gas from them
No they don't they do not show the Top Tier logo or are in the list according to toptiergas.com I drive a 2010 Camaro SS and used Murphy USA gasoline (premium) and for some reason the gasoline tends to drop quickly compared to other gas stations like (Mobile, Shell, etc...) that are in the list of Top Tiers.