Just filled up the tank with 91 octane premium fuel

[427chev]

Originally Posted by Aothachos

+2 lol i used to get 60 miles before the first bar went, now i use 91 it goes up to 75-80 on the first bar =)

So you're saying that running 91 octane in lieu of 87 octane increases fuel economy by about 30%..

Wouldn't Toyota simply recommend premium if that were the case? Premium only costs roughly 10% more, yet according to you it improves fuel economy by 30%. That means that running premium is a FAR more economical choice than running regular.

Honestly, anyone can claim anything on these forums. The fact of the matter is that I hold a mechanical engineering degree, have been employed in the profession for 23 years and have read quite a bit about the combustion process and fuel.

Scientifically speaking, your claim is baseless.

[BLAZINBLUEVITZ]

Originally Posted by 427chev

Honestly, anyone can claim anything on these forums.

and this is your claim:

I hold a mechanical engineering degree, have been employed in the profession for 23 years and have read quite a bit about the combustion process and fuel.
.

[427chev]

Originally Posted by BLAZINBLUEVITZ

I've aleady won my argument with you, based solely on that fact that you resorted to (baseless) insults in lieu of a credible response that included objective evidence to back your "opinion."

Time and time again, objective evidence proves my point. In fact, the article below noted that the car designed to run on 87 octane actually ran WORSE on premium. That is not the first time I've seen that happen. I suspect that premium's slightly slower burn time might result in compromised combustion in some engines that are designed for regular fuel.

http://www.caranddriver.com/reviews/...ature/(page)/1

http://www.consumerreports.org/cro/c...l-dollars-406/

"Don't use premium fuel if you don't have to. If your car specifies regular fuel, don't buy premium under the mistaken belief that your engine will run better. The only difference you'll see is about 20 cents more per gallon. Most cars are designed to run just fine on regular gasoline. Even many cars for which premium is recommended will run well on regular. We have found that the differences are imperceptible during normal driving. Check your owner's manual to find out if your engine really requires premium or if you can run on other grades."

[BLAZINBLUEVITZ]

Originally Posted by 427chev

I've aleady won my argument with you, based solely on that fact that you resorted to (baseless) insults in lieu of a credible response that included objective evidence to back your "opinion."

NO, your just a latecomer who thinks their gonna teach someone something with their knowledge. Maybe if this wasn't the 56th thread of the same topic id be a bit more receptive......

[427chev]

Originally Posted by BLAZINBLUEVITZ

NO, your just a latecomer who thinks their gonna teach someone something with their knowledge. Maybe if this wasn't the 56th thread of the same topic id be a bit more receptive......

I have nothing to "Teach" anyone on this board.

Rather, I prefer to ignore children who have no understanding of the related science and will therefore remove myself from this thread.