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#1&#2 diesel

Old 11-04-2008, 03:55 AM
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#1&#2 diesel

I know that I get #2 diesel out of the pump at the fuel station, where does #1 come from what's it used for and what's the difference between 1&2 and is there any other diesel grades? Thanks for helping me understand
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Old 11-04-2008, 08:18 AM
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#1 is thinner than #2. Before ultra low sulfur, they would simply blend #1 and #2 to make winter fuel. When ULSD came out, they started using additive packages instead of blending because the #1 was often not ULS.

There are many grades of fuel, the higher the number, the thicker it is. It used to be that #2 diesel and #2 home heating oil were the same until they changed the sulfur requirements.
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Old 11-04-2008, 12:01 PM
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#1 diesel is similar to Kerosene. The cloud/pour point of #1 is much lower. For that reason some stations up north mix #1 and #2 during the winter months. #1 has less energy per gallon and will reduce your fuel mileage over using #2. With the way electronic engines recirculate fuel back to the tank and keep it warm, most places rely on the additive package provided from the fuel companies to avoid gelled fuel. You have to be in some pretty cold temperatures before you need to worry about mixing #1 in your tank.
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Old 11-04-2008, 12:10 PM
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Originally Posted by Guardrail View Post
#1 diesel is Kerosene.
Incorrect. #1 and Kero are different. Kero has 0 lube in it. #1 still has a bit although less than #2.

Originally Posted by Guardrail View Post
The cloud/pour point of #1 is much lower. For that reason some stations up north mix #1 and #2 during the winter months. #1 has less energy per gallon and will reduce your fuel mileage over using #2.
You are right on the money there.

Originally Posted by Guardrail View Post
With the way electronic engines recirculate fuel back to the tank and keep it warm, most places rely on the additive package provided from the fuel companies to avoid gelled fuel. You have to be in some pretty cold temperatures before you need to worry about mixing #1 in your tank.
I get straight #1 from the pump here from the end of September until March/April. No blending. I also run additives in every tank to drop the gel point and provide lubrication to the pump.
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Old 11-04-2008, 12:20 PM
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#1 is a little more refined than #2, but less refined than kero.
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Old 11-05-2008, 01:30 AM
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thanks a lot guys that helps me understand
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