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Old 07-15-2016, 04:20 PM   #1
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Diesel fuel

Maybe someone can answer this question. This is my first diesel and tow vehicle. Jeep Grand Cherokee Eco diesel.

I think we can assume gasoline quality varies by company. There are tier 1 gasoline ratings and manufacturers put in their own additives and costs vary.

Is this the case with diesel? I know that cetane rating is a way to determine quality. Is there a list of these rating by diesel fuel manufacturer and seller?

I know it's important to buy fuel that hasn't been sitting in the storage tank for a long period.

I'm buying my diesel at Sam's Club for 25 cents a gallon less than other stations. It's a high volume station and they sell quite a bit of it.

Has anyone found a difference in diesel fuel quality when buying it at different stations?

Kind of hard I guess to determine that, but what has been your experience and thoughts on the subject?

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Old 07-15-2016, 05:44 PM   #2
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I try to purchase at high volume sellers with a good price.

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Old 07-15-2016, 06:47 PM   #3
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High volume doesn't always help, I got a load of bad fuel at PILOT. I personally try to find SHELL, MARATHON or HESS/WILCO. I totally avoid LOVES since they seem to only have BIO anymore.

The standard cetane rating for diesel is 40 or better.
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Old 07-15-2016, 06:49 PM   #4
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For the most part I'm at high volume stations, but I don't remember a difference the few times I've gone to lower volume stations.
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Old 07-15-2016, 07:45 PM   #5
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Other than the cetane rating and possibly Bio, is most of the refineries putting out pretty much the same product?

Anyone seen a list of ratings for diesel, similar to the tier 1 ratings for gasoline?
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Old 07-15-2016, 08:36 PM   #6
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If you visit your local depot you see all the tankers pulling up to the same fill station. I might be wrong but I believe all the stations are selling the same product. I work close to a huge regional fuel depot and you will see every brand tanker truck pulling in or out at any time.
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Old 07-16-2016, 05:57 AM   #7
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Pretty much every station in my area has the 5-20% Bio label on the pumps. I just buy at the cheapest place (BP) as I've never noticed a difference.
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Old 07-16-2016, 06:03 AM   #8
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I have filled my truck at various places and I can not say that I have noticed a difference besides the price and ease of getting in and out. I do prefer Pilot/Flying J thanks to the fuel discounts I get with my Good Sam card.
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Old 07-16-2016, 06:04 AM   #9
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I've never noticed a significant difference in mileage or engine running, regardless of where I pick up fuel. I do put in an algae killer though if I'm not going to use my truck for extended periods of time. Algae tends to grow in the tanks, especially with as hot as it is. Believe this happens more with bio-diesel than with regular---at least from what I've been told.
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Old 07-16-2016, 07:00 AM   #10
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When Dr Rudolph Diesel designed his motor made it to run on anything except gasoline.. including B100 ( not called that back then). Just like gasoline never buy when the tanks are being filled or right afterwards as the sediment from the bottom of the tank is stirred up and can clog your fuel filter faster. You can buy based on price or ease of access or what ever you wish.. this tier 1 fuel is HOGWASH.. just a marketing ploy.. I have driven my diesel from Sask Canada to the Southern tip of Baja and back with no fuel problems.. just remember every time you change your oil change your fuel filter...

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