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Ever Get Bad Gas? (Update: it wasn't the gas) Login/Join 
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posted Hide Post
quote:
Originally posted by calugo:
quote:
Originally posted by kkina:
It's not running so bad I can't drive it, so I'm just going to run out the tank then fill it at a different station. If it's still bad, I'll try some actual fixes.

At this point I just want to know if there's a specific gas station I need to avoid.


I'd start with avoiding the gas station you purchased bad gas from and I would let them know they have bad gas. With that said in reality any station can have bad gas for one reason or another. I normally avoid off brand gas stations and purchase gas from top tier stations.
 
Posts: 2181 | Location: USA | Registered: December 11, 2005Reply With QuoteReport This Post
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Picture of mark60
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A couple years ago I topped off the truck because we had a storm coming. When I finished filling up and started the truck every warning light it had came on, but it was running fine so I drove it home. Once the engine cooled off it wouldn't start so I had it towed to the dealer and they found water in the tank. The station found out one of their refueling guys didn't put the caps back on their tanks correctly and the snow and parking lot swarf wound up in their tank. Their insurance covered the bill at the dealership along with several other vehicles that wound up alongside mine. They emptied my tank and flushed the fuel rail/injectors.
 
Posts: 3974 | Location: Sunshine State | Registered: July 01, 2006Reply With QuoteReport This Post
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Yes I have. Coming back from San Jose, I gassed up at truck stop along I5 in the flat a little before the climb at Mt Shasta.
The pickup ran ok in the flat. But the climb made it overheat, and run so bad I had to shift to second. The engine was a built 400 ford with strong C6. 400 engines are crummy, but the build made it much improved.
I made it somehow to Weed and got gas. It ran better. Then back in Oregon, I topped off again with Union 76. Then it ran like a champ.



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Posts: 6717 | Location: Oregon | Registered: September 01, 2001Reply With QuoteReport This Post
Drill Here, Drill Now
Picture of tatortodd
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When you were last filling your vehicle was there a fuel truck delivering fuel? I avoid getting fuel while they're refilling the underground tanks because it stirs up both water and sediment. It's a temporary problem that even well run gas stations won't find in their sampling and testing for water.

There is an old saying - dilution is the solution to pollution. Gustofer's advice is what I'd do since it's running.



Ego is the anesthesia that deadens the pain of stupidity

DISCLAIMER: These are the author's own personal views and do not represent the views of the author's employer.
 
Posts: 25561 | Location: Northern Suburbs of Houston | Registered: November 14, 2005Reply With QuoteReport This Post
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^^ What about the Fuel Filters? Serious question...

To my knowledge all Fuel Pumps (Gas and Diesel) have filters. Do they not filter adequately? I'd think any sediment in the underground tanks/fuel would be large enough to be caught in the filter(s), no? Water is a different issue entirely though.

I'm been leaning towards this 'don't fill when the fuel delivery truck is there' is a leftover from days long past and basically a non-issue in the modern era, but I've NEVER had a 'bad gas' issue either. I also only fuel up at 'top tier stations' so there's that.


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Posts: 10938 | Location: New Hampshire | Registered: October 29, 2011Reply With QuoteReport This Post
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quote:
I think you'd be better off filling the tank to full with good gas, diluting whatever is in there that is bad. Maybe run it down to half and fill it up again with good gas. Rinse and repeat.

Or, just invest the 5 minutes and $6.99 suggested earlier get some gas-dry, plus the new better gas on top.

There's no way I'd just keep driving around on what I think is potentially watered gas.



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Posts: 13578 | Location: Madison, MS | Registered: December 10, 2007Reply With QuoteReport This Post
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I used to get gas from a no name gas station near Mission and Army, Now Cesar Chavez in San Francisco. My car would sputter. But it was cheap gas and I was poor



"It did not really matter what we expected from life, but rather what life expected from us. We needed to stop asking about the meaning of life, and instead to think of ourselves as those who were being questioned by life – daily and hourly. Our answer must consist not in talk and meditation, but in right action and in right conduct. Life ultimately means taking the responsibility to find the right answer to its problems and to fulfill the tasks which it constantly sets for each individual." Viktor Frankl, Man's Search for Meaning, 1946.
 
Posts: 21704 | Location: The Free State of Arizona - Ditat Deus | Registered: March 24, 2011Reply With QuoteReport This Post
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About 10 years ago when we were looking for a house in Vegas, I filled up our Hummer H2 at a gas station before driving back to Cali. We made it past NV/CA state-line when the H2 started losing power. I had it towed all the way to Pasadena (about 250 miles). Had to switch to a different flat bed truck in Barstow, CA. What a nightmare.

Dealership had to drain a full tank of gas and replace the fuel filter. They said it was bad gas.


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Posts: 2135 | Location: Las Vegas | Registered: November 05, 2003Reply With QuoteReport This Post
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quote:
Originally posted by 4MUL8R:
Gasoline is refined to a legal standard, then distributed through pipelines to regional markets. As such, it is of uniform quality, until it is further processed at terminals to specific brands.

Fuel at gasoline stations is potentially adulterated by storage tank conditions.

So, if a car has “bad gas” it is likely a caused by a specific station, not the name brand of that station.



^^^ This
I was told many years ago by a guy that ran the R&D lab where 4MUL8R probably works that it is best not to fill up when you see a tanker putting fuel into the stations tank as that process stirs up any contaminants in the bottom of the tank.


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Posts: 7280 | Location: In transit | Registered: February 19, 2013Reply With QuoteReport This Post
Drill Here, Drill Now
Picture of tatortodd
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quote:
Originally posted by nhracecraft:
^^ What about the Fuel Filters? Serious question...

To my knowledge all Fuel Pumps (Gas and Diesel) have filters. Do they not filter adequately? I'd think any sediment in the underground tanks/fuel would be large enough to be caught in the filter(s), no? Water is a different issue entirely though.

I'm been leaning towards this 'don't fill when the fuel delivery truck is there' is a leftover from days long past and basically a non-issue in the modern era, but I've NEVER had a 'bad gas' issue either. I also only fuel up at 'top tier stations' so there's that.
IMO, you're leaning in the wrong direction.

I work for an integrated oil & gas company (explore, produce, refine, and market) and our gasoline additives are top tier certified. Employees receive a modest employee discount on gasoline, and the employee discount applies to spouses and children living at home. I don't know a single coworker who fills their vehicle at one of our top-tier gas station franchises when the fuel tanker is delivering fuel to the below ground tanks. However, coworker's children and spouses are hit and miss on following that and several have had fuel problems after filling up while the tanker was there.

For example, my mentor gave wife and duaghters gas station credit card for the discount which he pays the bill for all 4 cards, and since his daughter works she paid her regular credit card bill. She filled up at the gas station with our employer's logo out front even though the tanker was there because she wanted Dad to pay for gas instead of going down the street and paying for her own gas. Roll Eyes She got bad gas, the car had to be towed to the dealership, and she fessed up when she asked her Dad to help with the repair bill.

Possible reasons:
  • the prevention of not having pump suction on bottom of tank is temporarily rendered moot while the tank is stirred up from filling. This is both water and sediment
  • when water is the culprit for the "bad gas." The sediment filters don't do anything for the water that is stirred up.
  • filter housing will accept many grades of filters. Absolute filters are the very best as the micron rating is for 3-dimensions, and less expensive filters the micron rating is 2-dimension which allow long, skinny sediments to pass through.
  • counterfeit filters. The 3rd world will counterfeit anything and has become very good at the details (e.g. the packaging, certifications and tests, etc). I'm currently engineering manager in a group that does $1+B upstream projects and a portion of current project is because a previous $1+M project unknowingly utilized counterfeit filters. Those filters had a lot more eyes looking at it before installation than a gas station filter.



    Ego is the anesthesia that deadens the pain of stupidity

    DISCLAIMER: These are the author's own personal views and do not represent the views of the author's employer.
  •  
    Posts: 25561 | Location: Northern Suburbs of Houston | Registered: November 14, 2005Reply With QuoteReport This Post
    Drill Here, Drill Now
    Picture of tatortodd
    posted Hide Post
    quote:
    Originally posted by Georgeair:
    quote:
    I think you'd be better off filling the tank to full with good gas, diluting whatever is in there that is bad. Maybe run it down to half and fill it up again with good gas. Rinse and repeat.

    Or, just invest the 5 minutes and $6.99 suggested earlier get some gas-dry, plus the new better gas on top.

    There's no way I'd just keep driving around on what I think is potentially watered gas.
    I'd simultaneously do both in this order:
  • dump the appropriate amount of ethanol shield for the size of gas tank. As previously stated in thread, ethanol shield is more effective than heet.
  • fill up with top-tier gasoline. Actually, I'd fill up with top-tier premium gasoline even though my vehicle only needs regular unleaded (i.e. 87 octane).

    The reason I say premium is that it's protected throughout the transportation cycle from the refinery to the distribution terminal. ASTM allows a certain amount of diesel in gasoline. On a pipeline batch change (e.g. diesel to gasoline or gasoline to diesel) they have four choices:
  • Schedule batches smart. Put regular unlead batch up against diesel then premium unlead up against regular unlead.
  • At the batch interface, put the diesel interface into regular unlead tank (i.e. cannot put gasoline into diesel tank or bad things happen)
  • At the batch interface, cut the interface into a slop tank and then truck the slop tank back to refinery. This is expensive and is typically reserved for when they don't/can't schedule smart and put premium batch up against a diesel batch.
  • Combination of bullet #1 and #2. This is the industry norm and it means the premium unlead won't have diesel in it. This is why personally to clean up a vehicles gas tank I'd use premium because you're getting the purest gasoline.



    Ego is the anesthesia that deadens the pain of stupidity

    DISCLAIMER: These are the author's own personal views and do not represent the views of the author's employer.
  •  
    Posts: 25561 | Location: Northern Suburbs of Houston | Registered: November 14, 2005Reply With QuoteReport This Post
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    My opinion, get a bottle of HEET and some good fuel injection cleaner, fill up with some good gas, then go on a long highway drive for about an hour or 2. Hopefully that helps. Keep us updated. God Bless !!! Smile


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    Posts: 3224 | Location: Sector 001 | Registered: October 30, 2009Reply With QuoteReport This Post
    Lost
    Picture of kkina
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    Quick update, I decided to top off at half tank (at a different station obviously). After another 80 miles, the engine started running much smoother, and the Check Engine Light, which had since come on, went off again. Hopefully this is the end of it. Thanks for all the suggestions.



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    Posts: 17986 | Location: SF Bay Area | Registered: December 11, 2003Reply With QuoteReport This Post
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    In the 1973-1979 while in Alaska during the severe Arctic winter months I would buy "Heet" by the case and with almost every tank add a can.... If you went 2 or 3 tanks without adding the "Heet" you were asking for trouble....Whether you bought gas on military post or from civilian gas stations.... Once coming back from Fairbanks back to Delta Junction (100 miles) about halfway my fuel line started to freeze up to the point of only 15 mph max availabe...When getting into Delta Junction I dumped 3 cans of "Heet" and topped off gas tank. (Motor Chevy 350 V8) Within 15 miles everything smoothed out for the better... Never again forgot to add the can of "Heet" with every fill up especially during the Arctic winter weather conditions. ..................... drill sgt.
     
    Posts: 2374 | Location: denham springs , la | Registered: October 19, 2019Reply With QuoteReport This Post
    Hop head
    Picture of lyman
    posted Hide Post
    quote:
    Originally posted by OKCGene:
    I only buy gas from the name brand stations, not the others.

    Around here most of the name brands are branded Conoco/Phillips 66.

    Best wishes to you.
    .


    except,,


    everyone's gas comes thru the same pipeline,

    the difference?? if brand Z or brand B uses a proprietary blend, it is done at the tank farm when the tanker truck is loaded, then delivered to the gas station,

    so BP, or EXXOn or Shell will have whatever they use for additives squirted in the tank when loaded,

    then dropped in the tanks at the retail locations,

    there is limited transport via truck
    gas is pumped via pipeline to distro hubs, and trucked from there



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    Posts: 11400 | Location: Beach VA,not VA Beach | Registered: July 17, 2007Reply With QuoteReport This Post
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    Picture of lyman
    posted Hide Post
    quote:
    Originally posted by nhracecraft:
    ^^ What about the Fuel Filters? Serious question...

    To my knowledge all Fuel Pumps (Gas and Diesel) have filters. Do they not filter adequately? I'd think any sediment in the underground tanks/fuel would be large enough to be caught in the filter(s), no? Water is a different issue entirely though.

    I'm been leaning towards this 'don't fill when the fuel delivery truck is there' is a leftover from days long past and basically a non-issue in the modern era, but I've NEVER had a 'bad gas' issue either. I also only fuel up at 'top tier stations' so there's that.


    I can only say for Kroger, and it has been 10+ yrs since I worked for them, but filters (for sediment etc) were replaced yearly,

    I think,


    water was not an issue , see my post about Veeder Root and the paste used on the sticks used to verify



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    Posts: 11400 | Location: Beach VA,not VA Beach | Registered: July 17, 2007Reply With QuoteReport This Post
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    The worst case I had was in 1986. I gassed up at my local station as usual and headed for work. My 1975 F150 started running rough and when I revived it up, black smoke came from the exhaust. I bought dry gas from a store and after adding it drove a bit and that helped. My 302 did not get the best gas mileage normally but it sucked the rest of that tank of fuel.



    The gas station closed until they cleaned up their act and fuel.

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    Posts: 1502 | Location: Texas | Registered: January 01, 2006Reply With QuoteReport This Post
    Drill Here, Drill Now
    Picture of tatortodd
    posted Hide Post
    quote:
    Originally posted by lyman:
    quote:
    Originally posted by nhracecraft:
    ^^ What about the Fuel Filters? Serious question...

    To my knowledge all Fuel Pumps (Gas and Diesel) have filters. Do they not filter adequately? I'd think any sediment in the underground tanks/fuel would be large enough to be caught in the filter(s), no? Water is a different issue entirely though.

    I'm been leaning towards this 'don't fill when the fuel delivery truck is there' is a leftover from days long past and basically a non-issue in the modern era, but I've NEVER had a 'bad gas' issue either. I also only fuel up at 'top tier stations' so there's that.


    I can only say for Kroger, and it has been 10+ yrs since I worked for them, but filters (for sediment etc) were replaced yearly,

    I think,


    water was not an issue , see my post about Veeder Root and the paste used on the sticks used to verify
    I don't know Kroger's practices. Were y'all using absolute filters (i.e. the filter's micron rating in 3-dimensions) or the less expensive 2-dimension micron rating filter? Did y'all have a differential pressure gauge or alarm across the filter to determine if it was clogged before the yearly changeout?

    I suspect we have an apples and oranges comparison going on here on the water. The question is about truck stirring up the tank and causing problems. Am I correct that the water sample was pulled at the time of day/week/month the accountants specified rather than immediately after the truck offloaded (i.e. stirred up the tank)?



    Ego is the anesthesia that deadens the pain of stupidity

    DISCLAIMER: These are the author's own personal views and do not represent the views of the author's employer.
     
    Posts: 25561 | Location: Northern Suburbs of Houston | Registered: November 14, 2005Reply With QuoteReport This Post
    is circumspective
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    An old timer I knew way back when said this is why he fills it when it's down to half a tank.. You won't get more than half a tank of bad. It stuck with me.



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    Posts: 5774 | Location: Las Vegas, NV. | Registered: May 30, 2009Reply With QuoteReport This Post
    Lost
    Picture of kkina
    posted Hide Post
    OK, this is really turning into a dramatic series...

    The CEL eventually came on after the fillup of "bad" gas, but strangely went off again just as the fuel gauge read at the exact halfway point.

    Then I refill at half-tank, from a different station. The CEL comes on again (even though it's now diluted), and once again self-extinguishes when it reaches exactly half-tank.

    (The engine is still running a little rough, though driveable.)

    Anyone have any idea why this would be happening? Why would the CEL consistenly go off by itself at the half-tank mark?



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    Posts: 17986 | Location: SF Bay Area | Registered: December 11, 2003Reply With QuoteReport This Post
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