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“Name brand” gasoline

Posted on 5/15/24 at 7:56 pm
Posted by Bob Sacamano 89
Member since Apr 2023
101 posts
Posted on 5/15/24 at 7:56 pm
Is there a difference in shell or chevron higher marked up gasoline vs sams or a quick stop etc. I’ve heard the latter is shite then I heard there is no difference other than a little additive at the end.
At the end 30 cents only adds up to a few dollars per tank but is there a real difference for the vehicle?
Posted by Dandy Lion
Member since Feb 2010
50604 posts
Posted on 5/15/24 at 7:57 pm to
quote:

little additive at the end

Marathon is supposed to be the best.
Posted by Jcorye1
Tom Brady = GoAT
Member since Dec 2007
73200 posts
Posted on 5/15/24 at 8:00 pm to
For lack of better terms, what you know as base gasoline is mixed together at most terminals. The additives are added in the end after truckers either swipe a card or a code. It's fascinating, almost sounds like a ping pong ball getting sucked into a vacuum when it's injected.
Posted by footswitch
New Market
Member since Apr 2015
4154 posts
Posted on 5/15/24 at 8:09 pm to
I remember Amoco white gas would substitute for Coleman fuel.
Posted by Cosmo
glassman's guest house
Member since Oct 2003
123130 posts
Posted on 5/15/24 at 8:10 pm to
quote:

Marathon is supposed to be the best.


Thought Techron was
Posted by CollegeFBRules
Member since Oct 2008
24374 posts
Posted on 5/15/24 at 8:13 pm to
The additives are not inconsequential, but the gas typically all comes from the same place in a general area.
Posted by auggie
Opelika, Alabama
Member since Aug 2013
28936 posts
Posted on 5/15/24 at 8:15 pm to
I've never been able to tell much difference.
Posted by sta4ever
The Pit
Member since Aug 2014
16244 posts
Posted on 5/15/24 at 8:17 pm to
BP gas is the best
Posted by Chad504boy
4 posts
Member since Feb 2005
170216 posts
Posted on 5/15/24 at 8:20 pm to
I fill up where da milfs are at
Posted by Simon Gruber
Member since Mar 2017
866 posts
Posted on 5/15/24 at 8:20 pm to
Walmart gas has given me some of the best mpg over the years. Shell has given me the worst.
Posted by auggie
Opelika, Alabama
Member since Aug 2013
28936 posts
Posted on 5/15/24 at 8:21 pm to
quote:


I remember Amoco white gas would substitute for Coleman fuel.

Me too, and you could buy that, plus minnows and crickets and a homemade ham and cheese sandwich at the same place. Plus a 2 dollar Barlow knife if you were feeling rich.
.22 ammo too.
This post was edited on 5/15/24 at 8:22 pm
Posted by TigerHornII
Member since Feb 2021
559 posts
Posted on 5/15/24 at 8:22 pm to
Well, it can be complicated. I'm going to give you some gross oversimplifications:

First off, Techron is the real deal, and I have seen the test articles and raw data on it at an independent lab. It actually does something useful. Chevron is not the only brand that has it, but you can also catch BOGO sales of it in bottles at parts stores. There are maybe 1-2 other additives with the same active ingredient, but I forget who makes them.

Second, of all the "discount" gas, Kirkland is actually considered a "Top Tier" fuel by the industry. IDK about Sam's Club fuel. Costco actually makes a big deal out of their fuel having a high end additive package.

Third, if the gas comes down a pipeline, there are times when it is separated by water "slugs" from something else coming down the pipeline. SOME cheap gas brands are extracted from the last part of the gas just ahead of the slug, and have a bit of cross contamination.

That's all the OT needs for maximum Baw Dozer motoring. It only gets more technical and boring from here.
Posted by Mr Breeze
The Lunatic Fringe
Member since Dec 2010
6255 posts
Posted on 5/15/24 at 8:23 pm to
quote:

Thought Techron was

Most Corvette owners forums agree and it’s what I use.

Top Tier branded gas, Shell, Exxon etc have additives that do reduce carbon buildup over time on direct injection engines, which is most of them nowadays. You can do yourself by adding additives to “cheap” gas, just be careful as too much will blow the O2 sensors at the catalytic convertor.
This post was edited on 5/15/24 at 8:58 pm
Posted by Obtuse1
Westside Bodymore Yo
Member since Sep 2016
27354 posts
Posted on 5/15/24 at 8:23 pm to
Buy a Top Tier (just Google it) gas and don't worry about it. I tend to prefer Shell but it is not scientific. There is also a theory around shifting to different Top Tier gasoline regularly to take advantage of the different attributes of the different additive packages.

Different engines are more sensitive than others. My travel car has the Lexus version of the Toyota 3.3l V6 and it has over 430k miles on it with zero fuel related issues and it has been filled many times with what I would generally consider crappy gas.
Posted by North Dallas Tiger
Happy All Hallow's Eve
Member since Mar 2024
9406 posts
Posted on 5/15/24 at 8:29 pm to
On some real shite, playa, I seent this one post on this site under the thread title subject called "Things you swear by"

this cat said synthetic oil and ethanol-free gasoline

Been always had me some full synthetic oil every time but never ever used ethanol-free (actual) gasoline / there's a website that tells you where to get it - only one (1) spot in My neighborhood

my shite is running like butter and rumbling and grumbling like it should be and I swear the gas mileage counter is up by like 2 mpg and the entire fuel injection system and engine are thanking me with every stroke of the engine (pause)

geaux with ethanol free petroleum and thank me later

you are all welcome
Posted by LegendInMyMind
Member since Apr 2019
59477 posts
Posted on 5/15/24 at 8:29 pm to
The only ones I ever worry about are the stations I regularly see vehicles broken down within a few miles of.

There used to be one not far from me that always had at least one or two vehicles on the side of the road down from it. They 100% had bad gas. It was something to do with their tanks. It was especially a problem if you bought from them while a truck was filling the tanks.

I still won't buy from a station if I see a truck dumping gas. I'll just go to the next one. Maybe it isn't a real concern, I don't know.

ETA: It was a Chevron that had the bad gas.
This post was edited on 5/15/24 at 8:31 pm
Posted by Saint Alfonzo
Member since Jan 2019
23820 posts
Posted on 5/15/24 at 8:33 pm to
I put Shell 93 in the MINI almost exclusively, but the only gas I've ever had issues with is Citgo.
Posted by Spankum
Miss-sippi
Member since Jan 2007
56942 posts
Posted on 5/15/24 at 8:33 pm to
There are not all that many refineries in the country, so there can’t be a substantial difference between raw gasolines. The additives are however substantially different. I choose to burn cheap gasoline. I add a can of sea foam every 10,000 miles to keep my fuel system clean.
Posted by Jack Daniel
Gold member
Member since Feb 2013
26488 posts
Posted on 5/15/24 at 8:36 pm to
At our load rack at the refinery Exxon, Shell, Racetrac, BP and Walmart trucks all load at the same rack from the same tank. Some have their own additives but it’s all the same gas
Posted by auggie
Opelika, Alabama
Member since Aug 2013
28936 posts
Posted on 5/15/24 at 8:37 pm to
quote:

They 100% had bad gas. It was something to do with their tanks. It was especially a problem if you bought from them while a truck was filling the tanks.

I still won't buy from a station if I see a truck dumping gas. I'll just go to the next one. Maybe it isn't a real concern, I don't know.

This is a real thing, especially at stations that don't sell a lot of gasoline.
Half empty tanks will condense to the inside and there will be more moisture in the fuel.
Normally that water will settle at the bottom of the tank. The foot valve for the pump will be installed a little ways above the bottom, so it doesn't pickup that water.
When that tank gets really low though and that truck comes in dumping gas in the tank, all that water mixes with the gas for a little while.
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