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Old 09-21-2016, 02:21 AM   #1
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THOR #1765
Top Tier Gasoline

AAA: Not All Gasoline Created Equal | AAA NewsRoom

Interesting article on AAA analysis of detergent additives in gasoline and the potential engine damage that can result from using gasoline that has lesser amounts of additives. There is also a link to TopTier.com which lists the companies that meet the highest requirements for gasoline additives. Interesting, Pilot/Flying J is not among the companies which meets the requirements and I found an article where they admit that the do not. Wish I had know this before I just put 5-600 gallons of gasoline thru my Axis - much of it Pilot.

I have found articles back to 2012 on this issue, so it is not new, but AAA has brought it to my attention.
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Old 09-21-2016, 05:39 AM   #2
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I worked in the industry (pipeline maintenance) for 30+ years & unless you buy fuel from some no name unbranded mom & pop station the fuel has been tested/ certified as far as octane & other contents except for each different major retailers specific additive. Regardless of the name brand you choose the fuel at any number of different stations are getting their fuel from same 1-2 refineries in the area or pipelines from wherever, just because your favorite is say Chevron your favorite stop may be getting their fuel from Valero, Phillips, Exxon or whomever is in the area.
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Old 09-21-2016, 02:09 PM   #3
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I believed that for 50 years and bought my gasoline from the cheapest station. However, after looking at the AAA study and TopTier I've changed my mind. There are differences in the additives that different companies put in their gasoline (Pilot gasoline confirmed it by admitting that they do not put in as much), AAA tests confirm engine carbon buildup using gasoline a with fewer additives and TopTier routinely tests gasoline to ensure that their TopTier gasolines have the additional additives. The USG mandates the additives and amounts but the guidelines are from the 1980s and the new engines are significantly different and apparently need additional additives. I've bought from the cheapest gas stations my whole life, but I will not be doing it any more. Until someone comes out a refutes the AAA study and TopTier, I don't see the sense in risking engine problems for a few cents a gallon. AAA has debunked the gasoline company claims that using higher octane gas every once in a while is good for your engine. So I don't think they are in league with the gasoline companies on this issue... or any issue for that matter.
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Old 09-21-2016, 05:31 PM   #4
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THOR #3610
You can surely buy fuel wherever you choose, but know any large volume retailers are moving much more fuel than others so it is always fresh & has not been in their storage for months, did AAA report any claims from any major supplier for bad fuel.
There are specific criteria every refiner must meet before the fuel leaves the refinery & is sampled hourly to ensure that it meets that criteria, to be honest I don't know who coined the term "Top Tier" or exactly what it is, but just know if you are buying from a known retailer you aren't buying anything that should harm your engine.
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Old 09-21-2016, 07:00 PM   #5
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Actually, if you read the article, these are not claims, it is a study that AAA did using four vehicles - including a Dodge Truck - using gasoline with the additives required to be on the TopTier list and gasoline with fewer additives. The only thing the study addresses is whether the gasolines that do not meet the TopTier additive requirements can hurt your engine because of increased engine deposits. The study indicates that the use of not TopTier gasolines can lead to significantly more engine deposits. We are not arguing bad fuel or octane. As you mentioned in your first reply, sometimes different gas stations get their fuel from the same refinery but they add their own additives before selling it. The AAA study looks at the role the additives play in engine deposits and concludes that it is significant.
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Old 09-21-2016, 07:11 PM   #6
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I was thinking the other day that gasoline just seems dirtier today than it used to.... or maybe it's just me.

I have been noticing this dirty film behind the fill door around my gas cap build up more over the last bunch of years than i ever remember before. Just the other day I was noticing another car at a stoplight had the funk multiplying and growing out form behind the gas fill door...

I wonder if this might be related to the topic of this thread....
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Old 09-21-2016, 07:26 PM   #7
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It's not so much that plain gasoline will necessarily harm the engine, but that additives will help keep the engine cleaner and therefore should maintain/improve long-term performance.

All engines will have normal deposits, and it seems best to me to deal with deposits as you drive rather than let them get bad enough to cause an issue and then take the car in to have the fuel system cleaned.

I primarily buy Exxon but will occasionally buy other top brands; and have never had a single issue with injectors or fuel system on any vehicle. And some of them have exceeded 200,000 miles. I think it's cheap insurance.

I have on rare occasion purchased a tank of cheap gasoline, but have gone right back to Top Tier brands figuring the additional additives will clean any deposits over time.

According to the following it was the auto industry that requested higher quality gasoline (not to be confused with higher octane).

https://en.m.wikipedia.org/wiki/Top_...rgent_Gasoline
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Old 09-21-2016, 07:41 PM   #8
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From a wise old sage that used to work on my car...
"Once a year buy 3 bottles of injector cleaner and use on the next 3 fill-ups".

Cheap Insurance.
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Old 09-21-2016, 07:47 PM   #9
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Why bother when you can do it on the go? It doesn't get simpler than that.

And it's always worked for me.
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Old 09-21-2016, 08:25 PM   #10
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THOR #4486
Fuel system cleaner a good idea for folks with limited access to top tier fuel providers. In the northeast, WaWa has displaced so many corner stations we no longer have as many choices depending on where you live and the drive to/from work.
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Old 09-21-2016, 08:36 PM   #11
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Quote:
Originally Posted by blw2 View Post
I was thinking the other day that gasoline just seems dirtier today than it used to.... or maybe it's just me.

I have been noticing this dirty film behind the fill door around my gas cap build up more over the last bunch of years than i ever remember before. Just the other day I was noticing another car at a stoplight had the funk multiplying and growing out form behind the gas fill door...

I wonder if this might be related to the topic of this thread....
That is more than likely the farmers subsidy (ethanol) building up you're talking about. The government wants 10% ethanol in the gas, worst thing for your engine, which in turn cuts your mpg by 10%, but now the farmer has a market for his corn.
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Old 09-21-2016, 08:46 PM   #12
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BTW, not trying to start a war with any farmers on here, but in my opinion that's why the "Top Tier" fuel has so many additives is to counter act the poor effects ethanol has on your engine. If you truly want the BEST fuel, find a station that has ethanol free gasoline regardless of the brand.
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Old 09-21-2016, 11:27 PM   #13
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THOR #5196
Been using Top Tier gas for years! If you want to see what it is go to [url=http://www.toptier.com], great information there along with a list of retailers. If a retailer carries Top Tier they HAVE to carry it in EVERY station.
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