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  #13  
Old 11-04-2013, 11:00 AM
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Re: Now that you got your unicorn, here is a cetane list

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Originally Posted by bill_de View Post
How are these additives supplied to the dealers.? I know it's been awhile, but I ran stations under a few different brands and neither the truckers or the dealers added anything to the gas. What was put on the truck at the depot was what went into the customer's car.

Hess took samples every month to make sure it was their gas in the tanks and it wasn't tampered with. My former neighbor hauled gas until he retired 10 years ago. He never heard of anybody adding anything to the gas.

I'm not saying it isn't happening, but it seems strange that a commodity that has to meet certain standards relies on the retailer to ensure the components in the final product.


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It's done at the terminals. I've heard, but not yet confirmed, that has been done at the stations with 55 gallon drumps and transfer pumps but that's done only at very rural stations where the tanker makes multiple deliveries along the way.

This is only for the additive packages by the way. The raw fuel is common across most brands. I have no clue if the additive packages have cetane boosters to meet the company minimum or what they do. I know I have seen BP stations listed at 40 cetane in some states, 45 in others, and 50 in other places. I believe it all comes down to the local stocks available.
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Old 11-07-2013, 01:18 PM
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Re: Now that you got your unicorn, here is a cetane list

I live not to far from a Shell refinery. I was told by the people that work there that they make several additive packages both for gas and diesel. Either is simply a bulk commodity, the additives are the difference in the finished product. What is offered depends on demand, laws regarding cetane and octane, availability of certain additives which are reportedly in some cases excruciatingly expensive, and time of year. There is a big ol tank of each offering they have decided to produce that the trucks then fill up from. Retailers can pick their poison from whats on the shelf so to speak.

Keep in mind thats second hand information and I'm only repeating it. If it is correct its possible a very large retailer like Costco might have a high enough buy that one of those spec'ed fuels is their request but I don't know that.
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Old 11-10-2013, 08:12 PM
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Re: Now that you got your unicorn, here is a cetane list

I worked at the refinery close to me in Ohio, I know that even as often as week to week weather changes, they would blend things different. In general there is "summer" and "winter" blends...I.e. Depending on how cold it gets where you live, you'll see a decrease in mileage using winter blend. That said, there is still a "baseline" that must be met. Also, especially in winter, I tend to use stations that turnover their fuel tanks frequently, so there is always fresh fuel. For the most part, about anywhere you get fuel, it's good fuel, some engines just seem to take to certain brands better than others. Some fords(gas) used to say on the fuel cap, BP recommended, not sure if they still do, we phased out fords at work a couple years ago.
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