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Old 08-04-2013, 04:21 PM   #1
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What is "premium" diesel?

Not sure if this is the right forum for this question ... but since most diesel users are Class A, I am dropping this here....

Recently I was at a local truck stop where they sell "premium" diesel. when I asked at the desk what "premium" diesel is, I got the response that it was diesel with all the additives already added to it. When I asked for more detail, I was told that it had DEF and the like already added to it. (Yes I TRIED to explain that DEF did NOT go directly into the fuel, but this person was convinced it did ). I decided not to get in to a fruitless discussion/argument, and so let it go and walked away. My question though still remains: just what is meant by "premium" diesel, and is it worth buying if available??
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Old 08-04-2013, 04:25 PM   #2
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In my experience, so-called "premium diesel" is just a marketing label that came into use around 10 or so years ago. I am in the business and know of no significant difference between diesel and premium diesel at least as it's sold here in New York Stste.
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Old 08-04-2013, 04:35 PM   #3
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Methinks premium is the price, not the product.
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Old 08-04-2013, 04:41 PM   #4
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Quote:
Originally Posted by Moonrover View Post
Methinks premium is the price, not the product.
AGREE !!!
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Old 08-04-2013, 05:00 PM   #5
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LOL.

I guess there is a reason why marketing people are so well paid...
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Old 08-04-2013, 05:13 PM   #6
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Since there is 'summer blend' and 'winter blend', maybe premium is the off-season stuff, it's all about marketing.
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Old 08-04-2013, 05:17 PM   #7
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I'm not a diesel guy by any stretch, but the only different diesel fuel I ever heard of was #2 and #1 diesel. #1 being for super cold climates where it doesn't 'gel' and #2 for warmer climates or summertime use.
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Old 08-04-2013, 05:23 PM   #8
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From Wikipedia;

Quote:
In North America, most states adopt ASTM D975 as their diesel fuel standard and the minimum cetane number is set at 40, with typical values in the 42-45 range. Premium diesels may or may not have higher cetane, depending on the supplier. Premium diesel often use additives to improve CN and lubricity, detergents to clean the fuel injectors and minimize carbon deposits, water dispersants, and other additives depending on geographical and seasonal needs.[citation needed]. California diesel fuel has a minimum cetane of 53. http://www.arb.ca.gov/enf/fuels/dieselspecs.pdf
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Old 08-04-2013, 05:43 PM   #9
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Recently saw a sign on a pump at a Pilot Truck stop near Miami, FL. This fuel may contain BIO-Fuel? I didn't know that any company was blending the two together. Don't know if this a coming trend or not. Needless to say I didn't top off my diesel tank. safe travels... ed
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Old 08-04-2013, 07:10 PM   #10
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Recently saw a sign on a pump at a Pilot Truck stop near Miami, FL. This fuel may contain BIO-Fuel? I didn't know that any company was blending the two together. Don't know if this a coming trend or not. Needless to say I didn't top off my diesel tank. safe travels... ed
On my recent return through Wisconsin I bought fuel at a Pilot, which also had the indication of some percentage (20% ?) being bio-fuel. I know the early bio-diesels (~10 years ago) had some problems, but those were quickly corrected. In either case I was caught between a low tank and too many miles to go before the next diesel opportunity. Bought 50 gal: no problems after that, and same mileage as the rest of the legs on that trip. Pilot is in too many locations to sell fuel that would give them a bad name ... my guess is that as a type of fuel it is probably ok: not "premium" ( I think the other posters are probably right on in identifying what that is... or is not...), but probably ok to use, with the usual caveats about buying from a high turnover station......
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Old 08-04-2013, 07:36 PM   #11
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Most likely a nickle a gallon more would make it 'premium'
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Old 08-04-2013, 11:19 PM   #12
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I have tried the "reg" and premium" diesel in my Duramax....the "reg" had less of a cetane rating....and dropped mpg by 2mpg....last I ever used of that and last time I used the station(nationwide truck stop chain) that sells the 2 different types
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Old 08-05-2013, 12:57 AM   #13
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Hey, regardless, diesel is always at a premium price compared to gas... Like a .40 per gallon premium....
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Old 08-05-2013, 05:02 AM   #14
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At ConocoPhillips here in Billings MT, the premium diesel label also states -15 pour point. When asked, retailer stated that the current diesel was not -15 and therefore was not the premium diesel.
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