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Join Date: Jan 2003
Location: Dublin, CA
Posts: 6,269
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Top Tier Gas Study by AAA
Very good article on an analyzes by AAA of Top Tier vs, non-top tiers gasoline:
http://newsroom.aaa.com/wp-content/uploads/2016/06/Fuel-Quality-Full-Report-FINAL-1.pdf
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Sergio The GT Lid Whisperer PCA 42yrs / Ex-RGruppe #197 '19 718 Cayman S (9th Porsche/1st with PDK) '14 Subaru Forester XT (Porsche support vehicle) |
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07-07-2016, 07:53 AM
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Join Date: Apr 2007
Location: wisconsin
Posts: 2,553
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Interesting...
Cliffnotes: Top Tier gas reduces carbon buildup and is better for your car... I didn't see them define anywhere what "Top Tier" is? Are we talking a certain brand? Shell? Speedway? Chevron? I don't think I have ever seen a pump labelled "Top Tier." |
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07-07-2016, 08:28 AM
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07-07-2016, 08:32 AM
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RETIRED
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Dump a bottle on Techron in every ten tanks and forget aboot it.....
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1983/3.6, backdate to long hood 2012 ML350 3.0 Turbo Diesel |
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07-07-2016, 08:37 AM
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Costco is nice because it's on the top of all of the best fuel lists, it's "top tier", and it's cheap.
http://engagedscholarship.csuohio.edu/cgi/viewcontent.cgi?article=1000&context=tdr $2.34 for 91 octane today. :-)
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88' 911 Carrera, Sunroof Coupe. Black. 76' FJ40 Land Cruiser 71' BMW R75/5 www.dirtsunrise.com |
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07-07-2016, 08:43 AM
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Location: Dublin, CA
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Techron - is there a need to use it if you use top tier gas?
If you shop around (the "cheap gas" app is great for finding tier one brand stations) it's fairly easy to find tier one gas at a fair price. Also, anyone know if Safeway gas is tier one? Thanks
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Sergio The GT Lid Whisperer PCA 42yrs / Ex-RGruppe #197 '19 718 Cayman S (9th Porsche/1st with PDK) '14 Subaru Forester XT (Porsche support vehicle) |
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07-07-2016, 09:43 AM
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What?
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Very interesting. My Wife's Hyundai has been having some of the problems described. Thought maybe it could be non top tier fuel but she usually fills up with Costco gas.
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________________________________________ Eric Hahl 85 911 to 73RS backdate, a.k.a. "Gretchen" (SOLD) 2015 981 Cayman S (Sold) 23 Outback Wilderness & 23 BMW R1250GS |
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07-07-2016, 09:44 AM
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Join Date: Apr 2007
Location: wisconsin
Posts: 2,553
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Quote:
Perhaps a better question then is, what ISN'T a top tier chain??? |
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07-07-2016, 09:51 AM
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Join Date: Sep 2007
Location: Boston, MA
Posts: 1,461
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Well, Safeway, Sunoco, and Gulf are not on the list. Plus all those neighborhood discount gas places.
The list changes over time. It used to be a lot shorter. Here in the Boston area there are lots of Mobil stations, but they didn't used to be Top Tier. Shell was the only common Top Tier that was easy to find here. Mark
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1979 911SC Targa |
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07-07-2016, 10:24 AM
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Join Date: Dec 2014
Posts: 989
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I'm guessing that not all gas stations that have a brand on their gas that's included in the Top Tier list are really dispensing Top Tier gas.
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07-07-2016, 10:30 AM
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Join Date: Sep 2007
Location: Boston, MA
Posts: 1,461
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On the Mass Turnpike they rebranded the stations from Exxon to Gulf a few years ago, but I believe initially they were still selling the Exxon fuel. I don't know how common that is. I bet it is pretty rare.
Mark
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1979 911SC Targa |
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07-07-2016, 11:08 AM
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Techron
If you already fill up with Chevron, do you ever need to dump in a bottle of the pure techron? Is that Seafoam stuff worth it? I've heard mixed reviews.
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1986 Carrera Coupe - 1987 W124 300E - 1999 Land Cruiser 100 - 2021 GLA250 |
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07-07-2016, 11:39 AM
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Join Date: Dec 2014
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I've used the Seafoam treatment on another motor to clear out a lot of gunk from the intake manifold and such. It definitely creates a plume of white smoke that will panic your neighbors and attract any number of law enforcement, EMT, and firemen to your location, guns drawn, stretchers ready, axes and hoses waving. I didn't notice any change in the performance of the motor afterward, but I may have been a little distracted.
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07-07-2016, 12:13 PM
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I've used Techron with great success for 25 years. I have been on family trips where my family car was running a bit rough, then added a bottle of Techron while getting gas and rough running goes right away. Amazing!
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07-07-2016, 12:49 PM
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88 Carrera, Guards Red
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QT used to advertise as a top tier gas. don't know what happened to that.
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07-07-2016, 04:28 PM
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Cars and Cappuccino
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Quote:
They're on the list at the link above.
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http://www.carsandcappuccino.com 1987 Grand Prix White "Outlaw" Turbo Coupe w/go-fast bits 1985 Prussian Blau M491 Targa 1977 Mexico Blue back-dated,flared,3.2,sunroof-delete Coupe 1972 Black 911 T Coupe to first factory Turbo (R5 chassis) tribute car (someday) |
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07-07-2016, 06:24 PM
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Fahren mit dem Wind.
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If you are located in one of the boutique regions (see report) like we are here in MA, don't all stations (name branded or local on the corner) have to comply? It would be interesting to know how these boutique formulations differ from Top Tier. Finally, it would be interesting to see a similar study using a fuel additive like SeaFoam or Techron. Has anyone run across these? I haven't had time to search yet.
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Keeper of the 1983 911SC Cabriolet Registry (http://911sccabrioletregist.freeforums.net) Caregiver to: 1983 911 SC Cabriolet - Fahern mit dem Wind. (Moss Green Metallic over Champagne and Brown Leather) |
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07-08-2016, 04:36 AM
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Fahren mit dem Wind.
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One of the references in this paper is a really good over view of fuels, additives, oxygenation, after market additives, etc but the link in the paper has an extra space. Here is a working link to it:
https://www.chevron.com/-/media/chevron/operations/documents/motor-gas-tech-review.pdf A very interesting read. Pg 79- talks about additives.
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Keeper of the 1983 911SC Cabriolet Registry (http://911sccabrioletregist.freeforums.net) Caregiver to: 1983 911 SC Cabriolet - Fahern mit dem Wind. (Moss Green Metallic over Champagne and Brown Leather) |
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07-08-2016, 04:41 AM
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RETIRED
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1983/3.6, backdate to long hood 2012 ML350 3.0 Turbo Diesel |
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07-08-2016, 10:26 AM
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Gas Huffer
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The best thing you can do to your car is stick to 1 brand. This will help it not mix the different additives together causing potential for more gumming/deposits that may be cleaned better with a single additive doing what it's intended to do without other fuels fighting over it. Thankfully living in California, we basically have the cleanest fuel in the world here, and pay for it.
Good amount of info: http://www.toptiergas.com/faqs/
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67 Porsche 912R-STi - Betty White - Instagram: @912RSTi 69 Porsche 911T - Project 04 Ford F-150 FX4 - Boris Last edited by MichiganMike; 07-11-2016 at 09:01 AM.. Reason: tmi |
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07-11-2016, 08:58 AM
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Da cab
The Condor
Gretchen
Carrera
Porsche 911 Carrera
Porsche
Baby
1962 Porsche 356B Roadster S 90
Betty Blue... now Betty White?
Boris
