From a well to wheels point of view, ethanol component in fuel has less of a carbon footprint. I don't even know where you guys get this nonsense that adding ethanol is a 'scam'. I wouldn't worry about it too much, though, because you're unlikely to encounter it currently. It is not a bad idea to keep an eye out for any pumps labeled as dispensing E15, as there is a chance that consistent use over long periods of time might cause issues. There should be a label on the pump stating the maximum ethanol content.Ī very limited number of cars are tested and certified to be able to use 85% ethanol (E85), which has been around for years as alternative fuel, but is a little hard to find in most areas.Īn increasing number of cars are being tested and certified to use E15 (15% ethanol), but this is a relatively new thing. The overwhelming majority of gasoline sold in the US is E10. Your sales person's warning isn't about anything that is usually a problem. That is a normal warning included in the owner's manual for pretty much every car sold in the US except those that are tested to higher ethanol content. A salesperson at the dealer from which I bought the vehicle told me that Subaru has advised owners of any vehicles equipped that engine not to use gasoline with an ethanol content of more than 10%. Whether you want to put E15 in your car is up to you. Don't just assume it's not allowed because someone said so about your brand. Everyone should check their own car manuals, most of which can be found online. I've heard claims that Toyota/BMW/take your pick recommends against E15 but that's not simply true for most current models, from my spot check of a recent (2020 or later) Honda, Toyota, BMW and Ford model. Given that there are some cars like yours that are not supposed to take E15 I think/hope the labeling will be obvious. I think E15 is being sold as 88 octane so that's another thing to look for. I'd bet your Costco sells E10 but check it yourself next time, and check every time at any station to make sure you don't put E15 in your tank and endanger your Subaru warranty. I have yet to see E15 at any pump since hearing that it will be allowed this summer.

No more than 10% ethanol for the 2.5L engines, and no more than 15% for the 2.4L (which I have). Your salesman is correct, at least from what I see in my 2022 Outback manual. Kirkland Signature™ Gasoline complies with this law, and an ethanol content label can be found on the pump.' The Energy Independence and Security Act of 2007 increased this amount. There is only the question, 'Why does Kirkland Signature™ Gasoline contain ethanol?' followed by this answer: 'The federal Energy Policy Act of 2005 established the Renewable Fuels Standard, which required that a certain amount of ethanol be used in the nations' fuel supply. I looked at Costco website's 'Costco Fuel Q&A,' but could not find any information regarding ethanol content. The salesperson added that because of that advisory, he stopped buying his gas at Costco for his personal vehicle - also a 2.5 liter-equipped Subaru. Does anyone know the ethanol content of Costco regular unleaded gasoline? Is it the same at all Costcos?

Costco gas station price