The way gas if formulated depends on what state, or even county, you buy it in. It's all a matter of Federal & State laws. Unfortunately for me, all gas here contains ethanol due to state law. This is a farm state and the legislators wanted to pander to the farm vote.

I'm just astonished. I have no loyalty to any (name) brand, but will buy from whomever is the cheapest at the time. I'm still averaging between 230-250 mpg regardless of brand.:dunno:

Ditto!!

AND, now that it's warmed back up some, I'm back in the 260-270 miles per tank range (20mpg, city driving, on average), even using Speedway (10% ethanol) fuel. I'm going on a trip to Atlanta this weekend, and I fully expect to be in the 300-320 miles per tank range off of any 'ol truck stop fuel along the way...

Formulations change on May 1st to reduce evaporation in warm weather. Look for a power/mileage change at that time.

These are some awesome numbers, how are they getting these numbers? Do you guys shift at low rpms for example 3,000-4,000 rpm's because that is the only way I would get those numbers is if I grannied my car. I don't, I can't help it I get 220 miles per tank mixed driving city/hwy

Pretty much...I'm done driving like a bat out of hell. lol

Only some selected BP's in Florida, I just happen to be near one and wanted to try it. I was 100% Shell V-Power until the Nitrogen, now......I just don't know. :uhh:

Its a marketing gimmick.
All gasoline has nitrogen.
It's like tooth paste being a whitner.
Formula never changed.
Just the marketing and price increase.

Gasoline doesn't 'naturally' have any nitrogen compounds.....

Gasolines contain small amounts less than .1% volume of compounds with sulfur, nitrogen and oxygen atoms in their structures (excluding added oxygenates).

Refinning destroys many nitrogen and sulfur containing compounds but some survive.

Therfore gasoline contains nitrogen compounds and Shell is using a marketing gimmick.
to promote their product.

http://www.chevron.com/products/ourf...w_complete.pdf

It's not just Nitrogen they've added. Nitrogen is a part of their "patented cleaning system designed to seek and destroy engine “gunk” (carbon deposits)" according to their claims.

"Nitrogen is a key element of the active cleaning molecule in the new fuel, making it significantly more stable at higher temperatures common in modern engines, such as direct fuel-injection gasoline engines."

"patented cleaning system designed to seek and destroy engine “gunk” (carbon deposits)"

This is marketing hype

"Nitrogen is a key element of the active cleaning molecule in the new fuel, making it significantly more stable at higher temperatures common in modern engines, such as direct fuel-injection gasoline engines."

Take out new fuel. Nitrogen does have that affect and is present in all gasolines.

Once again marketing hype.


Have you ever taken advertising or marketing classes?

Every gasoline brand is mixed with roughly (by volume) 78.08% nitrogen, 20.95% oxygen, 0.93% argon, 0.038% carbon dioxide, and trace amounts of other gases, by the fuel injection system.

This mystery mixture is called AIR.

Yes, that why someone asked earlier... Why would you add more nitrogen into the system when it comes out as NOx or No2 which they are trying to control for green house affect.

:confused: I'm surprised to see that Sunoco (USA) is not listed as a Top Tier Gasoline Retailer.

I was thinking about trying it - but :nono: after seeing this.

I expected to see BP / Amaco on that list too :confused:.

to me, it doesnt fuxking matter.

with nyc slow ass traffic(even worst since bloomberg is in the office, thanks to his bike lane and not fixing roads policy) i get shitty mpg anyway.

on my way out there are mobil and bp. both mostly have the same price, but i usually fill up at night just to be sure i will fill up at the cheaper station (every penny counts!)

I've said it before and I will say it again. Top Tier is a marketing gimmick. These companies pay to have their product tested and if it meets a certain criteria, then it gets put on the list. It will stay on the list as long as they pay the annual fee. BP/Amoco & Sunoco just decided not to pay to get their product on the list.

Just nip on up to Canada to get your Sunoco since Sunoco Canada is on the list.

if (you don't give a f**k about Top Tier Gasoline)else
end

The test is real, the results are real, if you have the equipment you can prove it for yourself - how is this a 'gimmick'?

The long standing test for engine deposit control is the 'BMW' test - the intake valves are weighed, then run in a real engine for a long time under load, then re-weighed.

They must have gained 'less-than-x-milligrams' of gunk.

The new Shell gas will actually remove gunk from an already gunked up valve.......far exceeding the BMW requirements to pass the test.

Do you see any competitors saying 'taint so' or 'just a gimmick'? No, they have the equipment, they've done the comparison, they know the results and they are wishing it would go away.

(I have been refining oil, gasoline, diesel and jet fuel for about twenty five years and I would be more than happy to show anyone around my refinery if you are in the far North sometime.)

S

Top Tier is a marketing gimmick in that if your fuel meets certain requirements, you are allowed to join the consortium and use the Top Tier sticker on your pump. That dosn't mean that those that are not apart of the consortium don't meet the same requirements.

Quote from the USA Today article:
Bunk, say some. "I see these ads on TV where Shell says, 'We filled up with Shell and some other gasoline and saw a difference,' and I think it's a myth," says Thomas Darlington, engineer and consultant at Air Improvement Resource in Novi, Mich., and formerly at the EPA.

"Gasolines today are very, very clean from the standpoint of not forming engine deposits" because of the EPA and industry requirements, he argues. What does he buy? "I'm not brand-conscious. I go for price, as long as it doesn't have ethanol." He says ethanol cuts mileage 1% to 2% because it has a lower energy content than pure gasoline.

"I really look at these commercials and wonder, 'How do these guys justify this?' I don't see the benefits," says John Frala, who teaches auto mechanics at Rio Hondo College in Whittier, Calif. He says he's never seen a breakdown due to engine deposits.

"It's hype," says Dennis DeCota, executive director of the California Service Station and Automotive Repair Association. "It would be very hard to differentiate" among brands.

Top Tier is about additives in the fuel. All of the major brands have sufficient additives to keep the fuel system clean.

Major brands, maybe

but not so major, i dont think so

When it comes to cleaning agents in gasoline, fed requirements are kinda low. They cut it in 1/2 a while ago to save gas company cost isnt it?

does Shell working on carbon better (i basis this on others knowing more than i) out weight the 10% alcohol? i can get conoco 100% gas or shell with 10% alcohol.

:confused: Are you asking about Shell with 10% ethanol vs Conoco w/o ethanol ...... I'd avoid the ethanol and go with Conoco if you're car does not show any preference.

I filled the tank with 92 octane v power nitrogen enriched.

Drove about 200 miles in one trip and still have a few gallons left. (light went on just as i got home.)

This 200 miles included probly an hour or so of hard driving.

So far I am feeling good about the fuel economy with this new fuel.