Quote:
Originally Posted by WolfpackS2k
Could you be any more ignorant? The octane rating has nothing to do with hurting the environment. And ethanol production has been shown to be harmful to the environment, nevermind that ethanol contains less energy than gasoline and thus reduces the fuel mileage of vehicles. The ONLY benefit to ethanol being added to fuel is to (barely) reduce the US's dependence on foreign oil.
Think before you post  |
Uh dude? You're trying to over-simplify and misinform on a highly controversial subject in 100 words or less. It's not going to happen like that.
Besides, you completely misunderstood what he was talking about. He wasn't talking about Ethanol that's for sure.
Quote:
Originally Posted by iff2mastamatt
I'm a little skeptical if premium fuel (91-93) will improve mpg, but octanes above 93 definitely won't help (nor are cost effective). I'm waiting on the EPA ratings but it this thing can get 35 highway, I will be very pleased!
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It's not a universal statement. It really depends on the engine compression ratio, timing, and propensity to knock. Honda engines which are pretty knock resistant are tuned to handle up to 100 octane RON from what I understand. I believe the difference between Premium and regular is around 3% better efficiency. 3% more power is a big deal, never mind 3% more MPG at the same time.
I have heard that BMW did a study on the effect of using Premium vs Regular in engine design. I'm usually to interested in other subjects but I should look for that study someday.