adamstasiak

Yesterday I had to cut trees in my backyard. The problem is with the disposal so I burned them in a cylinder with gasoline in it. Decided to compare Esso and Shell. This is what I found.

Esso gas burns quick and even with no smoke at temp 520 degrees. There is nothing else to it.

Shell gas ignites slowly with light fractions burning first. The heavy fractions ignite later and the third portion somehow makes its way and sticks to the cylinder walls and slowly burns there for a long time. It releases thick black smoke. The temperature is 480 degrees.
These are my independent observations, yet they are true.
Can somebody interpret how these two would affects the AUDI engine?

vgorous

iTrader: (1)

doesnt shell have additive to burn off engine gunk in the cylinder, which is why you see slow burning on the walls?

try petro. I use petro 99% of the time.

adamstasiak

Yes. This is what they say.
I use Petro Can and Esso at will and once a year Chevron to clean deposits.

plg_cp

For what it's worth, I remember getting something in the mail from Audi about a year ago with a list of recommended Canadian gas retailers. Esso and Petro-Can were not on the list, Shell was.

Anyone else remember getting this and more details about it?

adamstasiak

I think this is what you received

TOP TIER Gasoline Retailers:

76 Petro-Canada
Aloha Petroleum Phillips 66
Chevron QuikTrip
Chevron Canada Rebel Oil
Conoco Road Ranger
CountryMark Severson Oil
Entec Stations Shell
Esso Shell Canada
Exxon Sunoco Canada
Kwik Trip / Kwik Star Texaco
MFA Oil Co. The Somerset Refinery, Inc.
Mileage Stations Tri-Par Oil Co.
Mobil Turkey Hill Minit Markets
U.S. Oil

This only describes who adds detergent to gasoline, but not the gas itself.

My concern is either to use a 3 stage dirty burning gas like Shell or clean burning Esso and Petro Can. I think Shell is dirty burning but the engine may like it since it has the ability to lubricate it from the inside of the combustion chamber. I swear the third part of it somehow found its way to the walls of the cylinder, got stack to it and it was burning forever.

adamstasiak

Hey..

Anybody used RACE TRACK GAS in BC????

mikeh

Article from CNET Reviews.

Shell announce a major change to its gasoline products.
(Credit: Shell)

Starting today, all Shell gas stations will be pumping a new fuel: Shell's nitrogen-enhanced gasoline.

Before you start speculating about the wonder fuel of tomorrow, understand that this nitrogen-enriched gasoline differs from the gas Shell was pumping yesterday in its engine-cleaning detergents and additives.

Shell claims that its nitrogen-enriched gasoline cleans better than before and protects better against engine buildup. Of note, all three grades of gasoline will contain the nitrogen-enriched detergents, with its V-Power premium grade containing five times the government-mandated amount. The results are fewer intake deposits, cleaner combustion chambers, and less fuel injector fouling and intake valve sticking.

Citing the rising complexity of new direct-injected and hybridized engines, Shell also claims that this new fuel is better suited to the rigors of modern drive trains.

Considering that detergents and additives are federally mandated in the United States, and just about every brand of gasoline being pumped today makes some mention of the power of their detergents, we don't see Shell's gas as being very revolutionary. We're also inclined to believe that the "nitrogen enhanced" title is more of a gimmick than anything else. However, any step toward cleaner, better-running engines is a good one in our book.

Shell stated that it didn't expect this new nitrogen-enhanced gasoline to result in an increase in fuel price. But with gas prices being set by individual stations and changing daily, that will be nearly impossible to measure.

mikeh

The TOP TIER Detergent Gasoline standards were developed to provide enhanced engine cleaning capabilities in fuels recognized by the program.
Six of the world’s top automakers – Audi, BMW, GM, Honda, Toyota and Volkswagen– have established strict standards for gasoline quality because engine performance and vehicle responsiveness can be adversely affected by gasolines that contain lower levels of additives. Those gasolines can leave harmful deposits on critical engine parts. Achieving TOP TIER status means detergency levels in each grade of Shell’s gasoline (Bronze, Silver and premium V-Power) are set higher than what is required by the Canadian General Standards Board. Shell is excited to be the first national fuel company not only to meet these standards – but to exceed them!

Benefits of Shell’s TOP TIER Detergent Gasoline

Shell’s TOP TIER Detergent Gasoline was developed in collaboration with a team of Canadian and global Shell fuel experts. We extensively tested fuels using our TOP TIER Detergent Gasoline deposit control additive (DCA). TOP TIER Detergent Gasoline will help keep engines cleaner. Clean engines help provide optimal emissions, fuel economy and performance for your vehicle. Also, use of TOP TIER Detergent Gasoline will help reduce deposit related concerns.

Commitment to fuel innovation, that’s what’s separates Shell from ordinary fuels.

vgorous

iTrader: (1)

I've read some where in this forum about the revised Shell gasoline. There's an extent of how much "gunk" build up it can removed. In addition, certain engines can only really benefit from this ei: Direct Injection....

I've got a B5....so no luck for me, but has anyobody done seafoaming here for the V6?

mikeh

Most fuels use a mixture of ethanol (10%) and gasoline to achieve a higher octaine rating and ethanol has lower amount of energy when compared to gasoline. Most of the ethanol used in gas comes from wheat products. Ethanol has about 76,000 BTU/gal while gasoline has 125,000 BTU/gal (mid-grade). So using a 10/90 mixture, there is a difference of 4900 BTU/gal. Therefore, technically if you're cruising at a constant state, more fuel will be needed using Ethanol based fuel vs using non-ethanol fuel like Shell. Theoretically speaking. The next step is a bench test. Meaning a controlled road test. Something Mythbusters would do!!

Let me give you an example. Taxi cars that use propane have to fill up more often and get less distance on the same amount of propane fuel than gasoline because propane has and energy of 91,000 BTU/gal as opposed to 125,000 BTU/gal in gasoline. The reason taxi cars and city vehicles use propane is that its cheaper to purchase which offsets the lesser mileage.