Quote:
Originally Posted by GTF
Advice from consulting engineer in petroleum industry:
*Use recommended spec. Going higher than recommended octane yields insignificant performance/efficiency gains in 95% of ICE motors.
*Using premium in engines tuned for regular is a waste in top-tier rated gas.
*There is little difference among major branded fuel.
*Top-Tier generally signifies that the additive packages are included in all octane choices, not just premium.
*The only meaningful choice is E0....ethanol-free.
Ethanol blends are a political scam by ethanol industry who own the politicians in the corn belt. Sold as a "green' choice, now simply a scam. Even Al Gore no longer a supporter.
So for the X5....min. 91 Ethanol-free top tier. Download app: PureGas
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You are right on about the ethanol. Raises the prices of food and animal feed that uses corn, and is actually LESS environmentally friendly due to the processing/transport and other externalities. It is a very foolish policy in this country.
So, it’s ok to use no-ethanol gas, correct?
I don’t know the ratings on the one available in my town, but I don’t want to do more harm than good, even if no-ethanol gas IS the most environmentally friendly option.