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Discussion Starter #1
I would love to be able to use Costco for gas but given the question of quality I do not put it in the Jeep. I have been going to Sunoco but it is not really convenient and it costs more.

Not only would I save money on the actual price but then get an additional % off with the AMEX Costco card

So last time I was at Costco filling the wifes car I saw this



Any thoughts or info as to if they have improved the quality and performance of there gas?

I do know that I am getting very fresh gas from them and all the pumps flow well so it means there filters are pretty clean.
 

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im sure Jim will chime in... but all i can say is, unless you plan on running down the track with it, and as long as its not knocking horribly, why not? i live where 91 is the ONLY thing i can i get and most of it is junk. not much i can really do but since im not racing every other week, its not too big a deal. throw some in the tank then data log and see how much knock u get
 

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I used Costco gas in my Overland (WK2) and saw about 2mpg decrease when running it. The mpg hit easily equaled the cost savings. My Dad's mpg went down too. My Dad's friend cooked too injectors from using it.
So, the money saved isn't worth it for me.
 

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Heres the gases i use in order. I dont use ARCO or any other cut rate.
1 mobil ca 91
2 76 ca 91
3 shell ca 91
4 chevron ca 91 (only if i have to)
5 vp109 mixed with all above (when barbara gives me 84 bucks to buy a 5 gal pale lol)
6 vp or sunoco 100 at the pumps when barbara wont kick in the bucks for vp 109
 

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I don't know about Kirkland Gas but there is no better White T Shirt than Kirkland Brand!
 

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Discussion Starter #6 (Edited)
I not speaking of the past as far as Costco gas goes, I know it has been less than the best as far as quality.

I will say they have good rotation so its fresh and the pumps flow well which I've heard means they change the filters frequently.

I'm asking what is the difference with this new announcement? I had heard about this a while back when I was chatting with the gas attendent before that it was coming.

What are they doing differently and whose additives are they using? Are they doing there own or just rebadging shells or chevrons? Does this mean that they are stepping up to be a top tier provider or closer to being one? Or is it the same old crap with a little marketing?
 

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I looked all over and call there corp office in WASHINGTON and found out there warehose buys there gas where they get the best bulk price overall and that is many diff suppliers and add there own additives.
 

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When I lived in Roswell, NM pretty much the only place to get 91 was at Sams club in town. I would see around 5 degree of ST KN when I was doing my tuning. There was one other station in town that I found that sold 91 and it didn't perform much better than the Sams gas. I ran some Torco octane booster in one tank and it did help bring my ST KN down to less than 1 degree most of the time during that tank of gas. I think for best performance stick with the Top Tier gasoline suppliers.
 

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When I lived in Roswell, NM pretty much the only place to get 91 was at Sams club in town. I would see around 5 degree of ST KN when I was doing my tuning. There was one other station in town that I found that sold 91 and it didn't perform much better than the Sams gas. I ran some Torco octane booster in one tank and it did help bring my ST KN down to less than 1 degree most of the time during that tank of gas. I think for best performance stick with the Top Tier gasoline suppliers.

funny part is, roswell has gas and oil mining all over the damn place and they still have shitty gas!
 

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I talked with the driver of a tanker truck dropping off gas at my local Costco. He said that they go with whomever has the cheaper gas at the refinery that day. My Costco uses 90% Shell gas.
 

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I only use Shell and Sunoco gas on my rig and Chevron when I can find it.
 

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Stick with top tier companies. Saving a little on the others won't pay off in the long run.
 

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I was using Costco gas for the past couple of months. I would get a check engine light every few days while cruising on the highway. I would reset it by disconnecting the battery since I didn't have my In-tune at the time.

Coincidentally, my last three tankfuls have been from "regular" gas providers, and the CEL has not returned. Coincidence? I don't know, but it is worth considering.

I used to fill up at the London Square Costco, and I don't think I will be returning there.
 

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Do yourselves a favor by looking for Ethanol free gas stations.
For the past 2 months I've been using 92oct Ethanol free gasoline. Johan said it's showing less KNK plus I gained better fuel economy. I'm getting 14.5MPG according to EVIC, I was only getting 13.1mpg when I used Shell.
Think about it this way, you are paying $$$ but only getting up to 90% gasoline.
Here is a link to help you locate some E-free gas stations.
http://pure-gas.org/
 

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Sounded like a good idea, until I looked them up in my area. Only 2 stations that are "sort of" nearby. But they only carry 90 octane to begin with.

Thanks for the tip though. I will definitely use that "ethanol free" fuel in my lawn mower and generator, as they are not designed to store any kind of ethanol for any length of time.
 

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Discussion Starter #16
Sounded like a good idea, until I looked them up in my area. Only 2 stations that are "sort of" nearby. But they only carry 90 octane to begin with.

Thanks for the tip though. I will definitely use that "ethanol free" fuel in my lawn mower and generator, as they are not designed to store any kind of ethanol for any length of time.
When was the last time you filled up at Costco? Did you see that sign in my op?

I'm just trying to figure out what changes, if any, they have made.

I'll get by there eventually and talk to the guy I know that works there to see what he knows.

I'm just wondering if they have made an attempt here at improving the quality of there gas or not.
 

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When was the last time you filled up at Costco? Did you see that sign in my op?

I'm just trying to figure out what changes, if any, they have made.

I'll get by there eventually and talk to the guy I know that works there to see what he knows.

I'm just wondering if they have made an attempt here at improving the quality of there gas or not.
When I was working on boats towing barge loads of gasoline one of our contracts was with ConocoPhillips, the guys at the receiving facility we delivered too (3,000,000 gallons every two days) would tell us when Costco would be selling ALL supreme in their tanks. That's right, all! ConocoPhillips would have so much super on their hands they would sell it to Costco for bargain rates and that's what every single pump in every Costco around Seattle would sell, didn't matter the grade you selected.

Why don't you get some and data log with it? Also monitor your mileage. Between those two things that should tell you everything you need to know.


Sent from my iPhone using Autoguide.com App
 

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Thanks for the tip though. I will definitely use that "ethanol free" fuel in my lawn mower and generator, as they are not designed to store any kind of ethanol for any length of time.

I use this stuff in my mowers and other small engine powered tools.
http://www.vpracingfuels.com/sef-94.html

I was having problems starting all of my equipment after 3 years of using regular 93 octane fuel. Even my 2-stroke tools were giving me problems, despite the fact that I used Amsoil Saber Professional 2-stroke mix oil that has fuel stabilizer. Eventually the ethanol won, and I had to rebuild or replace the carb on just about every piece of equipment I own.....not cheap.

Now everything starts on the first pull, reguardless of how long its been sitting. Most of the time I don't even need to choke the engine. The idle is much smoother, throttle is quicker, and it smells like race fuel. :D best of all it has a 2 year storage life.
I've used both the 4 and 2-stroke fuels. Both are excellent.

They used to sell it in 6 packs of quarts for $43, now they sell 8 packs for $63. I have also purchased 5 gallon pails from a local dealer, but they are a PITA to pour into a jug, and I usually end up spilling a little.


Sorry to go off topic OP. :silly:
 

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I've run Costco gas in my jeep for months. Butt dyno can't tell any difference. No mil lights. No misfires. I have not logged anything though. Hoping to hit qtr drag soon. See what happens.
 

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We've been using Coscto gas for years, regular and premium grade. I've used it in multiple cars and trucks as well as our 2012 5.7 Summit and our 2012 SRT8 and it has worked out flawlessly. The only gas we've had a problem with is Citgo.
 
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