Just received this e-mail from Shell USA. The Rep. is standing by top tier for all their fuels, they didn't indicate any regional shortages. If you have questions, don't ask me! Refer to them -
Jem (Shell USA)
10 Jan 2023, 16:57 GMT
Dear Brian Mann,
Thank you for contacting Shell.
ALL SHELL GASOLINE PRODUCTS (regardless of octane rating) PASS THE “Automotive Manufacturers Specification for Top Tier performance” (
http://www.toptiergas.com/retailers.html. ) Top Tier gas is a formal certification program originated by major auto manufacturers. See this link for further information:
http://www.toptiergas.com/
In essence, Top Tier certified gas is gasoline (whether regular or premium) that has more detergent additives in it than required by EPA regulations. These higher detergent levels can help keep engines cleaner (e.g., inlet valves in conventional port fuel injected engines and fuel injectors in direct injected engines) and thus run more efficiently. The auto manufacturers originally started this certification program to help deal with the difference between some of the lower quality/dirtier gasoline products produced in North America.
If you happen to have a high performance car, a European car, or even a car that specifically recommends the use of Top Tier gasoline in the Owner’s Manual, then you should probably use it. Please review the Top Tier Gas criteria (and what it means) at the Top Tier website:
http://www.toptiergas.com/
We hope you find
Sincerely,
Jem
Shell Customer Care Team
Call Center: 1-888-467-4355, press Option 8
Email:
[email protected]
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