It gets deeper and deeper into the whole nuance of this all: when I say "run as well as E10", I mean the ECU is now running at different timing than it would wi

It gets deeper and deeper into the whole nuance of this all: when I say "run as well as E10", I mean the ECU is now running at different timing than it would with E10, the injectors are running at a higher duty cycle across the RPM range. But modern engines will happily run like that for a long with no outward issue (especially if you're not someone that strains them), so some might argue that it's "running just as well". I strain my engine, so it's not what I'd consider running well. (Also all that is about E20-E30. "technically it's running well" won't continue all the way until E50 when at E30 you're already seeing the ECU needing to cope in the logs, and that's across many cars, not just my 4 series) - And when I say ethanol as a fuel is a farce, I mean zooming out at the whole exercise, not on a personal level. It's amazing in my tank, easily providing as much of a performance boost as much more drastic options like messing with emissions equipment. Even adjusting for energy, it is still cheaper than 91... But again, zooming out, for most people the performance difference is negligible because for them it'd be E10 vs E0, not E10 vs E30+. And they're paying a lot of money into the ethanol system for this marginal benefit: - Ethanol is heavily subsidized by taxpayers at production, at its "natural cost" the energy difference would make it more expensive gasoline: https://afdc.energy.gov/fuels/laws/ETH?state=US https://afdc.energy.gov/fuels/laws/ETH?state=US - Ethanol is subsidized again when its blended into E85 instead of E10, but most consumers are only even able to get E10. Even the physical pump dispensing E85 gets an additional rebate! - Because some of the subsides are only for fuel over 10% ethanol, E10 which most people have no choice in taking actually ends up more expensive than both E0 and E85! In times of need we end up dropping the E10 requirement because of that: https://www.cnbc.com/2022/04/12/biden-waiving-ethanol-rule-in-bid-to-lower-gasoline-prices.html https://www.cnbc.com/2022/04/12/biden-waiving-ethanol-rule-i... - The food that they do need, regardless of what they drive, competes with biofuel for farmland which is absolutely insane: https://www.technologyreview.com/2011/03/23/196198/ethanol-blamed-for-record-food-prices/ https://www.technologyreview.com/2011/03/23/196198/ethanol-b... https://www.reuters.com/markets/commodities/exclusive-britain-germany-push-g7-halt-biofuel-mandates-tame-food-prices-2022-06-23/ https://www.reuters.com/markets/commodities/exclusive-britai... - And then as this article shows, we're not even getting an environment So at the end of the day, regular people using E10 are seriously getting nothing positive from it, but paying into it in multiple ways. Overall I'm happy I can fill up my tank with E85, but the machinery around it is the literal definition of a frace.