What gasoline brand and what octane do you guys use?

[steve34459]

Out of curiosity , what do you guys use. Either 5.3 or 6.2. Im in socal so the options include chevron, shell, mobil, sams club , costco, etc. 87, 89, and 91 octane.

 

[tsuintx]

My wife buys the 87 where ever she finds the lowest price. Usually Kroger, Costco or QT.

 

[Miami-Dade]

I use only 87 Mobil in my 5.3..I use Mobil as their stations are always well maintained IMHO..Threw the years I know of people getting a tank full of dirt from poorly maintained stations.

 

[Mrhug3]

6.2, Mobil or Shell only. 93 octane.

 

[08HoeCD]

Since getting into my daily driver Tahoe with 5.3 motor I've been buying 87 or 89 octane from Sheetz since it's cheap and less than 2 miles from my house.

However, since my in-person tune with Justin of Black Bear Performance, who noticed knocking based on his 89 octane tune, I believe that there definitely are better and lesser quality fuels.

 

[tsuintx]

During all the years of driving, I've never made the brand of fuel a big deal. As long as the octane is what is needed.

Never had any issues due to any gas I've gotten. At least not that I know of. YMMV

 

[iamdub]

I try to buy anywhere that has non-Middle-Eastern gas (Valero, Murphy, BP, Pilot, Love's, RaceTrac...) and that has non-Ethanol gas. Being that it's pretty much impossible to determine the exact origin of the gas (actually oil) with some of those brands, I adhere more towards finding ethanol-free gas. As for the octane rating, I recently found that 89 or higher does better in my Tahoe- no preignition under load and better economy.

 

[04Huck]

I typically buy Kroger just for the savings and there's several within a couple miles of my house. If I can't get to a Kroger, QuikTrip is my choice. 87 octane either way

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[Parthery]

Quiktrip or Costco. Both are TopTier.

Kroger also an option because of the gas points...

 

[Rdr854]

When I had my 08 Suburban, I used 87 octane, which is the recommended fuel. I also try to use top tier fuel which is usually within a couple of pennies per gallon and sometimes cheaper than the off-brand stations. The primary stations we have are Exxon,BP and Shell as well as Costco. These practices also apply to my cars and new Suburban.