This Top Tier subject is brought up weekly. All Top Tier posts should be merged together. Gas additives have been in use for 100 years and Top Tier means an extra cent or two at the pump and clean breath for your Car.
I also fill up at Costco when I am in town (Toledo), but out where I live (farm country), there are 3 Circle Ks, 1 Shell, and about 3 miles down the road there is a Marathon. So for me, its Shell or Costco.I voted Other, because I fill up at Costco. Costco is top tier, and where I am, is the cheapest gas in the area (cheaper than the non-top tier stations). I also get 4% off on fuel using my Costco Citi card, which at these prices ends up being a savings of $0.10 per gallon.
same here when i fill my gas cars. plus during emergency less cars using it. in my area there is a lot of brand new racetrak and they sell a lot of diesel so i buy thereI voted Other, because I fill up at Costco. Costco is top tier, and where I am, is the cheapest gas in the area (cheaper than the non-top tier stations). I also get 4% off on fuel using my Costco Citi card, which at these prices ends up being a savings of $0.10 per gallon.
I filled up at Safeway on 8/31 and amassed an unheard of 15 Gas rewards. You can only use 10 at a time so I saved $12.50 on a fill up. Cleanest non Top Tier gas in town. To think what they did before Top Tier and how much longer engines are lasting these days:uhh:. The Stooges sold Mobiloil Becky, Hazel, and Ethyl in the 40s. Mohawk stations had an additive dial with 7 blends you could mix. It is all marketing and a pinch of detergent.I use a Chevron that is just down the street from Costco. It is about 20 cents more than Costco, but the lines are much shorter. And, I can get up to 20 cents off per gallon if I shop at Safeway. There is usually a 30-60 minute wait at the Costco by my house. That's not worth 10 cents per gallon in my opinion.