Shel_B
Site Donor 2023
- Joined
- Aug 7, 2020
- Messages
- 5,167
Use Costco with confidence ...Use SHELL with confidence,Use Chevron with confidence.
Use Costco with confidence ...Use SHELL with confidence,Use Chevron with confidence.
A couple related threads:
Top Tier gas unavailable at Kwik Trip - what additive to use instead?
Kwik Trip gas is not Top Tier for the time being due shortages of the additives, which I've read about on here. What should I be using as a supplement in my gas until TT is available again? Techron? How often? Thanks!bobistheoilguy.com
Top tier gasoline gone?
Has anyone else noticed the top tier rating stickers removed or covered on the gas pumps? I noticed it at our local qwik trip. Not knowing what happened I drove to Costco to fill up instead, and it was on our way to Milwaukee. If this becomes a thing with detergents not being available to meet...bobistheoilguy.com
I don't think one could answer the question without knowing exactly which additive and how much is in the fuel you're buying. They may already exceed EPA requirements as it is.
Only place I get gas for my daily driver.Costco here still proudly proclaiming Top Tier both onsite and on the website.
EVERY gasoline has to meet “EPA minimum”…so why are they all not “top tier”?By its nature, meeting Top Tier requirements will mean meeting EPA minimum. I think they specify the same tests (or substantially similar tests), but with a lower limit for deposits.
EVERY gasoline has to meet “EPA minimum”…so why are they all not “top tier”?
Top Tier gas has detergent levels and abilities ABOVE the minimum EPA requirements. At least that’s what they claim makes ‘em “special”!
There's no such thing additive incompatibility with regards to gasoline.By its nature, meeting Top Tier requirements will mean meeting EPA minimum. I think they specify the same tests (or substantially similar tests), but with a lower limit for deposits.
And of course it's not some snake oil. The main impetus for this wasn't fuel marketer but automakers who were having owners come back complaining of drivability issues, even with EPA minimum fuels. Still - I'm not sure what the deal would be when mixing and matching different detergents, whether it's a load from Costco getting the EPA minimum, then another shot at the station with their proprietary additive, mixing different Top Tier fuels with different additives, or even mixing and matching by using an aftermarket additive. What's that called - the Law of Unintended Consequences? What if there's some incompatibility that makes it worse? It's about motor oil, but I remember hearing about a case where two 5W-30 motor oils were mixed and the outcome was something like 10W-40 because of the way that the additives interacted with each other.
There's no such thing additive incompatibility with regards to gasoline.
Is it true that no gasoline can leave the terminal without the minimum amount of additives?Perhaps not in any way where it's like two different types of VI improver going haywire, but possibly where the detergent effectiveness of half with additive A and half with additive B isn't as effective as just A or B. I kind of wondered about what Costco does, which is add sometime on top of (what's likely) a generic additive from the fuel terminal at the station, unless they somehow have their proprietary additive added at the terminal. Of course that makes no sense - otherwise it would make more sense to just have all of it added there.
Is it true that no gasoline can leave the terminal without the minimum amount of additives?
A question about Costco gas additives
although more additives help in other places a DI only engine sprays NO fuel on the valves!!! we need more cars using both types of injection like VW uses ONLY in Europe!!!bobistheoilguy.com
Still awaiting all of the posters who destroyed their cars engine strictly because of the use of non-top tier gasoline. Then I will believe.
Agreed - if there's no Chevron nearby, Shell is a good option because they've had no problems with Motiva supplying their additives as far as I know.Use SHELL with confidence,
Agreed - if there's no Chevron nearby, Shell is a good option because they've had no problems with Motiva supplying their additives as far as I know.