top tier diesel
Hotshot
Joined: Oct 2015
Posts: 19,698
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From: Wyoming
I don't shop at Costco or use their fuel. Here is their web page on their diesel fuel: https://www.costco.com/gasoline-diesel.html.
I find it hard to believe that Costco would be putting their own additive mix in diesel that would be different from other stations around town.
I find it hard to believe that Costco would be putting their own additive mix in diesel that would be different from other stations around town.
Posting Guru
Joined: Aug 2007
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From: BA, OK
Looks like Costco is on the Top Tier List. With top tier diesel fuel launching on Sept 2017.
Licensed Brands | Top Tier Gas
I was not aware Costco fuels were top tier.
Licensed Brands | Top Tier Gas
I was not aware Costco fuels were top tier.
Super Moderator
Joined: Aug 2008
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From: Frederick, MD
We have a Costco near us. I see the same trucks deliver there as you do for all the mom and pop stations and 7 eleven establishments.
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Hotshot
Joined: Oct 2006
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From: Texas
Also the companies may trade stock. I.E. Exxon (For example)might have an excess of gas on the west coast and get on the horn with Shell (For example)on the east coast and trade 1,000,000 gallons (for example) of gas on the west coast with Shell for 1,000,000 gallons of gas on the east coast. This is one reason additives aren’t put in until loading.
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Laughing Gas
Joined: Sep 2016
Posts: 959
Likes: 18
From: Washington State
I will go over this again..........diesel fuel is diesel fuel, and gasoline is gasoline..........as long as it is “un-branded”. But, when the truck is at the loading terminal/refinery loading “branded” fuel, the driver then enters into the system who he is hauling for,I.E. “Exxon” or “Conoco” or “Chevron” or whoever, then during the loading process the additives that whatever brand uses in their “top tier” fuel is injected. And yes, while loading at the Conoco refinery, said driver “MAY” be hauling for Shell or Exxon or whoever!!! Just because a common carrier is hauling the fuel doesn’t mean that he isn’t hauling “branded” fuel.
Also the companies may trade stock. I.E. Exxon (For example)might have an excess of gas on the west coast and get on the horn with Shell (For example)on the east coast and trade 1,000,000 gallons (for example) of gas on the west coast with Shell for 1,000,000 gallons of gas on the east coast. This is one reason additives aren’t put in until loading.
Also the companies may trade stock. I.E. Exxon (For example)might have an excess of gas on the west coast and get on the horn with Shell (For example)on the east coast and trade 1,000,000 gallons (for example) of gas on the west coast with Shell for 1,000,000 gallons of gas on the east coast. This is one reason additives aren’t put in until loading.
Hotshot
Joined: Oct 2006
Posts: 10,157
Likes: 7,992
From: Texas
I hope that I made myself as clear as mud for you!! 
There is a lot that goes into the fuel retailing business that happens behind the scene that the public is not aware of!! And you are quite welcome.
There is a lot that goes into the fuel retailing business that happens behind the scene that the public is not aware of!! And you are quite welcome.
Hotshot
Joined: Oct 2015
Posts: 19,698
Likes: 12,824
From: Wyoming
Don, I used to work for Conoco so I'm familiar with the whole branded/unbranded scenario. All this is from the marketing perspective, I didn't actually work at the distribution terminal. My team wrote the software that set wholesale pricing in the U.S.
What I get from the Top Tier information is that over the years the level of detergents in fuel has been dropping and the Top Tier program aims to bring them back up. It may not be a matter of better or worse detergent but it is more of a quantity of detergent. Did anyone read it differently.
What I get from the Top Tier information is that over the years the level of detergents in fuel has been dropping and the Top Tier program aims to bring them back up. It may not be a matter of better or worse detergent but it is more of a quantity of detergent. Did anyone read it differently.
Posting Guru
Joined: Dec 2015
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As far as I know, Top Tier is for gasoline only. Costco gas is Top Tier, their diesel is probably just diesel.
Edit: Just went to the Top Tier site and see they now have Top Tier diesel, but I didn't see any company listed for that.
I am also curious as to what it means in terms of diesel - cetane, detergents, lubricity, etc.
Edit: Just went to the Top Tier site and see they now have Top Tier diesel, but I didn't see any company listed for that.
I am also curious as to what it means in terms of diesel - cetane, detergents, lubricity, etc.
Last edited by SkiSmuggs; Oct 8, 2017 at 07:49 AM. Reason: New Info
Posting Guru
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I found this: "Richmond, VA, July 12, 2017– Afton Chemical announced today that its North American Diesel Performance Additive (DPA) product line is the first in the industry to receive TOP TIER™ Diesel approval. The recently launched TOP TIERTM Diesel standard seeks to increase diesel fuel quality by establishing performance requirements for diesel fuel in five key parameters: detergency / injector cleanliness, oxidative stability, lubricity, water content, and particulate count. Afton’s DPA product line, containing Greenclean Detergent TechnologyTM, has been proven to successfully deliver the required level of performance specified in the standard."
Here is that site: Afton Chemical First Additive Company to Receive TOP TIER TM Diesel Approval - Afton Chemical
Here is that site: Afton Chemical First Additive Company to Receive TOP TIER TM Diesel Approval - Afton Chemical
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Joined: Jun 2017
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From: Woodbury CT
Diesel fuel is confusing as hell to me. I live in CT - every station I go to - Exxon, Shell, No Name - all have a "40" sticker on the pump. I've read that is the Cetane rating of the fuel. I've also read that companies screw with what's in the fuel regularly - for example - they put some kind of antifreeze stuff in it during the winter. I try to go to a station that is heavily used - thinking I'm getting the 'freshest' fuel as possible with the least amount of water in it. I'm also running PM22A with every fill up to try and make sure the fuel system is getting what it needs - better burns to hopfully reduce regens / lengthen the time between them.
Posting Guru
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Apparently Top Tier for diesel has nothing to do with cetane, which is around 40 for the US versus 51+ for Europe. It does have to do with stability, lubricity, water content and particulate count.
It doesn't matter if it is delivered by the same truck as the place down the street as long as the Top Tier additives are added in the prescribed amount.
It doesn't matter if it is delivered by the same truck as the place down the street as long as the Top Tier additives are added in the prescribed amount.