How did you know ?

If it is ethanol free, it would be because they mixed in so much other shit into the gas they cant legally get away with it. I know here in Boston, I can't find a gas station that doesnt have ethanol. Ethanol contains about 30% less energy by volume than gasoline and it absorbs water. That means we get worse gas mileage and worse performance. It also absorbs water, but theres no water in our gas :uhh:.

Shell and most other companies use ethanol. If your local gas station does not, feel lucky.

Federal law states all stations using ethanol must mark their pumps as such.

Also I asked the gas man about 5 weeks ago.

Their are 3 stations in a 2 miles radius that's ethanol free. Also there is no emissions testing or inspections in my area. So no cat for me.

You gotta ask yourself do you fill lucky?
I sure do!

Well then obviously you are not like 99% of the members on the forum. No emission testing or inspections? What does your city grow pot and make crack so laws dont mean anything lol. Good for you, I can only dream.

Out 0f the 7 Shells I went to, all 7 had ethanol stickers on the pumps. Gotta love that 10% that your getting. We should sell everything with a performance robber or something that degrades the original product. Atleast we would make more money. Oil now with 10% peanut oil, Kool Aid with 10% tomato juice, Women with 10% herpes.

Actually marijuana and meth is our 2 major exports. Look up north georgia and SE tennesee sometime you'll be amazed.

I knew there had to be a reason. Ethanol is bad for the meth :)

I topped off and went around 5 miles and I saw my gauge go down to 3/4 tank (8 gauges lie allot) so I filled it back up with Mobil and it took .8 gallons.. I might have hit red line a few times but still that's a bit much.. I was in a rush so maybe I didn't top off all the way at the shell station, that could explain the issue..

...Yea that was most likely it.

Maybe I'll give it another try.

I have seen pump prematurly stop pumping. It happened to me once. I was filling up from about 1/4 a tank and I put in less than $7 of gas and it stopped. I know I wasnt full, so I squeezed the handle again and it stopped after another $2 or so. Got in the car turned it on and I was close to being full but not quite there. Drove a little bit, when back to the gas station and put in another $3. Shit happens. To really get a good gauge of MPG and performance from gas, you really need to fill up with the same gas a few times. I have noticed a decrease in mpg for me. Probablly since I get all the Nitrogen crap and Ethanol were I live. I'll stick to Hess and Mobile were I seem to get better mileage. Im going to try Sunoco eventually, but its ever open when I need a fill up.

yea its happened to me before oh well.. I think I am partial to mobil becuase I get 1% cash back on my check card..

I like Shell because there's a 5% discount with their credit card. Hess used to be 5% but now it's 3%.

I don't think the shut-off pressure sensors on gas pumps are a consistent way to measure anything. It's very hard to fill up the 8's tank completely and I suspect that's on purpose because over filling is supposedly bad for the charcoal filter thingy.

yea I don't like credit cards though I get 1% back from my bank..

I haven't read any of the other posts in this thread yet. I use Shell Premium gas only. The engine is running fine, I've been using their nitrogen gas or w/e since it came out. I'm going to read the rest of this thread later...

lol. Cliff notes. Mazda does not recommend it. Shell has no comment. Some of us experience decrease in MPG while others claim an increase. I believe your MPG may have to do with where you live since some Shell stations do not have Ethanol while most do. Thats pretty much it.

I say we continue beating the subject to death...

we should start filling up on race fuel and premix for a month or two... That would be fun.

I would love to fill up with pur gasoline. No additives or extra enriching bs. We all know that will never happen though

i want to use jet fuel and have a turbine powered 8..

OK, read the thread, and I have to say, now that I think about it, my MPG has been lower lately. I attributed it to it getting nicer out and me using a heavier foot. But it might be the gas. I'm catless and get about 220 now whereas I was getting like 235 or so. I think I'm gonna try running a couple tanks of sunoco and see what the difference is.

Shell 93 is always 100% gasoline without ethanol, and with additives. That is why I used it all this time. My mileage dropped quite a bit with my first tank of 93 w/nitrogen. So I guess there could be an issue. So I am probably going to go 93 w/ethenol at some other gas station. If your car has a 100k power train warranty and only has 20k miles on it like mine, I wont bother with the little difference between 93 w/ethanol or without ethenol...just my $0.02

Come to Boston and you will learn how wrong you are. If you can find an Ethanol free gas station in Boston, I will find you manbearpig.

heh, all my co-workers are wondering why i just laughed so loud.. manbearpig

http://mulaz.org/blog/wp-content/upl...manbearpig.jpg

ITS HALF MAN, HALF BEAR AND HALF PIG!!!!!!!! IT ROAMS THE EARTH ATTACKING HUMANS FOR NO REASON!! PEOPLE WILL TAKE ME SERIAL

Manbearpig?!

:rofl:^ half man half bear half pig!

Depends on where you live. Some states has a regulation to have 10% ethanol. So in my area, I haven't found Shell 93 that doesn't contain ethanol - all pumps have the obnoxious "Contains Up To 10% Ethanol" stickers.

We get screwed since Shell uses 10% ethanol(in our areas) AND about 8x more than the standard amount of detergents in their gas, thus making them a Top Tier Gas Station. 8x More detergent(then your standard gas station.. we will say Hess) + 10% Ethanol = < Gas

at least y'all get 93 out there... were stuck with 91... Also I just started premixing which has killed my economy but made the engine run allot smoother, not sure what I should do about that.

What and how much are you premixing?

Well...I was refering to WI when I said Shell 93 does not have ethonol....it says in BIG LETTER - 100% Gasoline for 93, and upto 10% ethenol for 87,91

Sorry to hear you guys dont get it your areas, but I assume we wont have it for long either.

ManPigBear? lol that is funny!

lol - so it's a 150%? shouldnt it be 1/3 man, 1/3 bear and 1/3 pig

Oh who care...lol

What it should be and how it is referenced in South Park are two different things. I refrenced South Park since it makes it even funnier.

MMO 1/2 oz per gallon...

Most people use between 4-8 oz of premix per fillup(full tank). I use about 5oz since thats the size of the lucas additive bottle. I bought lucas just for the bottle, used it and refill it with MMO. Makes it easier to just grab a small bottle and dump it in to your tank at fillup. Anyway, I have not noticed a decrease in my mpg because of premixing, only from using different gas.

I do the same thing but I premix with 2 stroke oil from west marine. Buy a giant jug and refill the small bottles so when I'm gassing up, I can just dump one. It's more complicated in NJ because we're not supposed to pump our own gas. I do anyway about 1/2 the time though

Huh? You can't even pump your own gas? What kind of crazyness is this. The only fuel we can't pump is race fuel and that because it's illegal to put in a street car, ofcourse everyone does any way though.

NJ and Oregon have laws where only the attendent can pump the gas. Both states are all full service.

Sounds like just another excuse to dig into your pockets to me. Tell you what though go ahead and spill a bit of fuel on my paint and see what happens. I suppose they have laws for that as well.

The idea behind it is that it creates more jobs (gas station attendants)
The prices in NJ are one of the cheapest in the country. I'm still paying $1.99 for premium. Plus, if you really want to pump your own gas, it's not like the attendant is gonna complain or anything.....

Ah so its not law just a courtsey well that's cool I guess. Fuel here is not much more expensive here 2.05 but its ethanol free so we'll see who goes further on 100 dollers of gas

No, no.. it is law. They just don't care all that much. They'll do their job, but if you volunteer to do it, they'll let you

threadjack? I'm paying $2.39

anyways when you average it out I put in 7 oz's of MMO.. I noticed an immediate decrease in MPG I was sitting at 20/23 now I'm 18/20 its very strange(this I have measured over a few month's and averaged out the MPG's) however I know that the engine likes it so I'm happy to oblige.

Whenever Im in NJ, I always let them put it in, then I will take it out and lock the gas cap myself

cuz couple of times those asses didnt even close the lid right ... :(

so yeah ... Im doing it myself. when its done I just take my card back, put it back, lock it, and drive off. They dont mind. less work for them.

You can try adding less MMO to see if the MPG come back. I use about 5 oz, some use 4oz, some use 8oz. There is no magical number so dont feel as if you must use 7oz. I do agree with you though, after my first premix, I was hooked. I use about 5oz MMO on every fillup and on every few fill ups I add 2-3 oz of 2 Cycle oil aswell. Once I run out of 2 Cycle oil, I will be using FP+.

yea I'm afraid to introduce to many cleaning agents/oils the engine is sitting at 109k. unless it got replaced before i purchased it at 96k.. I'm still not sure how to verify engine replacement Mazda USA wont release the info.

MMO will help prolong the life of your engine by providing additional lubrication. Its never too late to premix. You may be able to go to your dealer and have them look up the VIN to see if the engine was ever replaced. Not sure if the ycan/will do that.

OK, 4 tanks of Shell nitrogen-enriched 87 compared with 4 tanks of Hess 87:

Shell: 895 miles / 50.7 gal = 17.7 mpg

Hess: 1080 miles / 54.4 gal = 19.8 mpg

I tried to drive my usual spirited style on both, red-lining 4-5 times on my commute, etc.

I hate ethanol. It caused my Mazda 6 to overheat and the Transmission overheated as well. It made the car run like crap and felt slower than a 1983 honda civic.

Seems about what I am seeing between the Shell and some BP(due to it being ethanol free). Both 93 octane and I'd say the Shell is about 20 miles or so to the tank lower. I still need more data to know for sure.

BP is ethanol free?
I might have to switch brands... Too bad theres no BP near me

I had worse gas mileage when it first came out and switched to chevron. But, I've since switched back mostly because of price.

I'm happy to report that for some reason I'm getting about the same gas mileage as the old formula now.

I have no idea why.