So, I've been pumping almost exclusively BP gas since I got my 2006 TSX late that year... With all this "Invigorate" advertising by BP, I've noticed that my MPG has dropped... I was averaging about 33MPG easily with my routes that I normally travel within a week; however, nowadays, I'd be lucky to be hitting 31MPG! And that's only if I consciously drive around 55-60mph. I used to regularly drive at least 10mph above speed limits and have no problem hitting 33 or more MPG.

So I was thinking that perhaps the "Invigorate" isn't good for mileage as it seem to coincide with when BP started to use ethanol or have more ethanol in their gas mix?

Anyone notice this? Or is it just my imagination?

 

see, I was wondering something similar.

but came to an odd conclusion.

it was actually my dropping of speed reducing my mpg.
much to my surprise.

go back up to the ten over you did before and see what happens.

and p.s. don't trust the MID too much.

 

the last two summers here in Texas w/ my TSX I see a drop mpg, while in winter I see it rise ~2-3 mpg. I chalk it up to summer fuels and higher temps.

 

Could be true. Many modern cars are geared to get best mileage around 65-70 mph

 

I use Costco gas and average 33 MPG HWY

 

Most stations are going to E10 across all the grades. Some have been doing it for a while, but more and more of them are. BP uses Amoco fuel, and I think they're one of the ones that's gone to E10 within this last year. That's most likely what's causing your drop in mileage. In fact, I don't know of any major fuel producer that's not using E10 anymore.

Doesn't bother me personally. Anything at all we can do to help reduce dependancy on foreign oil.

 

I completely disagree.

do you understand where ethanol comes from in this country?

corn.

our food supply.

do you like the price of all of your food going up?
do you like the idea of using food supply to fuel cars?

did you know corn is the most inefficient way to produce ethanol there is?

the ethanol business in this country is so bad for the people
it isn't even funny.
now if this was Brazil, and we used sugar cane, that would be a different
issue. but it isn't and it's not the case.

this is the "golden age" of corn farmers in this country and the decline
of food stability all over the globe.

I see what you mean about foreign oil, but ethanol is the worst alternative.

 

This is off-topic, but as MMsTSX suggested, don't be fooled by the push for Ethanol. It is all politics and no science. Many experts say the net gain from using Ethanol ranges from zero to some negative number; including hydrocarbon emissions. It takes a lot of fuel, fertilizer, and energy, to raise corn and convert it into ethanol. But, it is one of those "feel-good" government expenditures -- like "no child left behind". And, it really does help those corporate farmer's that are part of the Bush power base -- as well as those communities that get Federal Grants to build ethanol plants (a proven means of buying votes).

 

I understand what you're saying MMS, and I'm not going to let you lure me into a political debate. I'm not saying that you're wrong, but not entirely correct. The corn that used for ethanol production is livestock feed corn. Now, I understand that using it for ethanol production does make it more expensive for ranchers, which pushes up the price of food. But it doesn't take food from anybody's mouth.

And I understand that corn is one of more inefficient sources of ethanol. And I know that it others countries do it better than the US does. I'm not saying there's not room for improvement.

Domestic ethanol production creates American jobs. And with the current trend towards outsouring and cheap imported products from China and other countries, anything that creates jobs I would consider a good thing. Not to even mention the fact that one of our major interests in Iraq is their oil. Cutting our dependency on their oil reduces the need for our troops to be there fighting a pointless struggle.

I know this is totally off topic, so I'm going to end my comments here. I'm not saying that anybody's wrong or isn't entitled to their own opinion. That's what makes America great, so let's keep it that way.

 

Another reason you might see it rise in the winter is the fact that the AC sucks up a lot of HP. Windows up, AC off is the most efficient way to drive.

 

Use SHELL, don't go to BP. I think they mix water in. Sometimes after filling up on BP, I putt out when revving it. It never putts out with Shell. Shell seems good.