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According to the Top Tier website-
"TOP TIER™+ is an evolution of the TOP TIER™ standard, extending the benefits of TOP TIER™ to today’s Gasoline Direct Injection engines, while retaining the existing benefits for traditional engines. TOP TIER™+ is rolling out to stations across the US. Many fuel brands are in the process of converting their stations.
We are pleased to share that bp and Amoco gasolines are certified TOP TIER+. bp and Amoco’s long-standing Invigorate® additive underwent the testing for the Plus gasoline standard and passed, extending the benefits of TOP TIER™ to more vehicles than ever before...
Currently, Amoco, bp and Costco are the national brands that have announced they are TOP TIER™+."
For those of you who aren't familiar with it, Top Tier gas is supposedly a higher quality of gas and gas additives which was started by a group of manufacturers including Ford who found that the standard level of gas was insufficient and was causing problems. Top Tier+ is a new standard which is designed specifically for gasoline direct engines like ours.
AAA did a study comparing base level gas with the older Top Tier standard before the new Top Tier+ standard came in, and found significant benefits in the gas-
https://newsroom.aaa.com/2016/07/aaa-not-gasoline-created-equal/
I know some people think it's just marketing, but I don't think it is, it looks like there's a decently rigorous certification process. Also, the stations that are Top Tier around me that I go to are BP or Exxon, and I've never seen any sign or other marketing touting that it was Top Tier. If it was just marketing, then why aren't they marketing it? It may be on their website, but who reads a fuel company website before going to their gas station?
I figured it certainly doesn't hurt to use Top Tier gas and it probably helps, so it's worth it to me. I also haven't found it to be significantly more expensive, and in some cases it's less expensive than gas without the certification.
"TOP TIER™+ is an evolution of the TOP TIER™ standard, extending the benefits of TOP TIER™ to today’s Gasoline Direct Injection engines, while retaining the existing benefits for traditional engines. TOP TIER™+ is rolling out to stations across the US. Many fuel brands are in the process of converting their stations.
We are pleased to share that bp and Amoco gasolines are certified TOP TIER+. bp and Amoco’s long-standing Invigorate® additive underwent the testing for the Plus gasoline standard and passed, extending the benefits of TOP TIER™ to more vehicles than ever before...
Currently, Amoco, bp and Costco are the national brands that have announced they are TOP TIER™+."
For those of you who aren't familiar with it, Top Tier gas is supposedly a higher quality of gas and gas additives which was started by a group of manufacturers including Ford who found that the standard level of gas was insufficient and was causing problems. Top Tier+ is a new standard which is designed specifically for gasoline direct engines like ours.
AAA did a study comparing base level gas with the older Top Tier standard before the new Top Tier+ standard came in, and found significant benefits in the gas-
https://newsroom.aaa.com/2016/07/aaa-not-gasoline-created-equal/
I know some people think it's just marketing, but I don't think it is, it looks like there's a decently rigorous certification process. Also, the stations that are Top Tier around me that I go to are BP or Exxon, and I've never seen any sign or other marketing touting that it was Top Tier. If it was just marketing, then why aren't they marketing it? It may be on their website, but who reads a fuel company website before going to their gas station?
I figured it certainly doesn't hurt to use Top Tier gas and it probably helps, so it's worth it to me. I also haven't found it to be significantly more expensive, and in some cases it's less expensive than gas without the certification.
