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magicarpet

(19,238 posts)
14. I currently drive a Cadillac with a 5.0 North Star engine as a Sunday relaxing touring road trip car.
Mon May 4, 2026, 05:37 PM
Monday

I try and remain alert that good quality gasoline goes in to that gas tank. The car manufacturer recommends fuel standards higher than the EPA requires for good engine performance and the life of the engine.

During the week I use an old beat up GMC pickup truck not so picky about fuel quality.

Thank you for your response post - ProfessorGAC you always provide helpful information here at DU.

++++++++++

7-Eleven doesn’t sell just one type of gas. They operate two completely different fuel models, and the quality gap between them is massive.

If you’re pumping from a pump labeled “7-Eleven” or “Speedway,” you’re getting fuel that meets the bare minimum EPA requirements—nothing more. Neither brand appears on the TOP TIER™ certified retailers list, which is the automotive industry’s gold standard for fuel quality.

Sure, the base fuel starts at the same refineries and travels through shared pipelines. But the magic happens at the terminal when your gas gets loaded onto the delivery truck.


What’s On The Pump TOP TIER Status What You’re Getting Should You Buy It?
7-Eleven (generic) No EPA minimum only Avoid
Speedway p No EPA minimum only Avoid
Exxon (at 7-Eleven) Yes Synergy high-detergent Yes
Mobil (at 7-Eleven) Yes Synergy high-detergent Yes
Chevron (at 7-Eleven) Yes Techron high-detergent Yes
Sunoco (at 7-Eleven) Yes UltraTech high-detergent Yes
Marathon (at 7-Eleven) Yes High-detergent formula Yes
CITGO (at 7-Eleven) Yes High-detergent formula Yes


Much more info at the link below,..

https://cartipsdaily.com/is-711-gas-good#google_vignette

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