E-Class (W214) 2024 -

Sams Club gas

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Old Jun 19, 2025 | 09:20 PM
  #26  
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From: DFW Texas
GL450, E450, Porsche 718 GTS
Every time I drive by Sams fuel station, cars are backed up waiting in line to get gas. I drive one mile farther down the road and get gas at Walmart. It may be 2 cents more a gallon but I don’t have to sit in line for 10 minutes. I’ve never had any engine damage from any brand of gas.
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Old Jun 19, 2025 | 09:23 PM
  #27  
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From: Long Island, NY
2024 E450
Originally Posted by JTK44
Been using Costco gas for several years and love it: My best range, which was posted after a fill up was 719 miles!
I did 730 miles or so, amazed me! So probably gas quality differs by locations. Wait, you are in Long Island. Which Costco do you use? I only tried Riverhead.
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Old Jul 2, 2025 | 06:21 AM
  #28  
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Originally Posted by Roweraay
Do we know for certain that Costco is top-tier ? I typically avoid these discount sellers, but if it is truly top-tier, then I don’t mind switching to them. Currently, I exclusively put in Shell Premium. Thank you very much.
Costco is for certain top tier.
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Old Jul 2, 2025 | 06:23 AM
  #29  
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Originally Posted by liexpress
Interesting to see the Top Tier rating. Is the quality anything related to mpg? I used Costco few times and mpg was horrible (not on MB). Now I've been using Sams and I once got around 40 mpg and more than 700 miles range - of course I drove on highway mostly and I had to drive gently. Usually I get 6xx miles.

Which car? E53?
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Old Jul 2, 2025 | 07:09 AM
  #30  
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Originally Posted by yodogyodog
Which car? E53?

Best to let this discussion go lest you awaken the beasts
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Old Jul 2, 2025 | 08:27 AM
  #31  
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Originally Posted by liexpress
I did 730 miles or so, amazed me! So probably gas quality differs by locations. Wait, you are in Long Island. Which Costco do you use? I only tried Riverhead.
Commack
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Old Jul 2, 2025 | 08:56 AM
  #32  
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On a recent road trip I was refueling daily with various gasoline brands. I noticed many of the major brands are now placing "top tier" decals on their pumps as an advisory. Licensing a "top tier" certication label costs every gasoline supplier money, and is contrary to the discounting strategy of Costco and Sam's. This doesn't mean these discounted brands aren't quality fuels. Some folks swear by Royal Purple engine oil, which costs 1/3 more than any other brand at Walmart, yet RP carries no approvals for any German autos -- does that mean it's crap? So we're all confused.
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