Which gas is better for my 2014 Honda Accord LX: Shell or Chevron?

Which gas is better for my 2014 Honda Accord LX: Shell or Chevron?

Both are top tier gasoline. So as an industry standard there's no difference. However, with my personal experience of owning more than a dozen vehicles over the last three decades Chevron generally has a superior fuel because their addition of detergent additives.

They are both top tier gasoline brands. Contrary to rumor, retail gasoline varies widely in quality. They come on the same truck but the stock level of detergent is too low for modern cars so top tier retailers add detergents at the station. Some cars are not sensitive to it; some very definitely are, and Honda vehicles typically are. (Honda, Toyota, GM and BMW were the founders of the Top Tier Consortium.) Symptoms of using low quality gasoline include poor fuel economy, stumbling coming off idle, clutch judder in manual transmissions, and check engine lights. My daughter's 2002 Sienna threw a P0420 (catalyst system efficiency below threshold [bank 1]) from prolonged random gasoline use, and it cleared up when I used Techron and had her use top tier gasoline regularly.

What makes you think there's any difference between them? There's a fair chance that they both came on the same truck or were in the same tank.

All that gas comes from the same terminal. It might come in a Shell truck, it might come in a Chevron truck.

In my 2011 Odyssey it's almost always 87 octane juice. As for brand, it's usually Kroger as we take advantage of the $1.00/gallon discount deal that they have. Because the Odyssey has the largest tank, it gets the Kroger fuel.

Every single vehicle in my household is filling up by a different brand and most of the time will be the same station, on the way to work or from work place. Close to home or work etc.

I do not think that there's any different between the top tier gasoline. It's depending on the condition of your car as well. Stay with the octave requires for your 2014 Accord and try out several tankful between Shell and Chevron and see which one help your Accord in performance wise. That what I would do. May be the different is in the detergent that clean your engine injectors, valves etc. That's what I think.

This link may help you to understand the top tier gasoline available in the States:
http://www.toptiergas.com/retailers.html

Other like the S2000 and TSX it's always 93 octane and primarily Shell. Not because I'm in love with Shell but it's really the most convenient option for us, as there's a Shell station within 1 mile in either direction from my house. But I've used Costco, Exxon, Quik Trip, Conoco, Chevron, etc… And have never noticed a difference.

Shell

Look in your manual Honda Actually recommends Shell gasoline.