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Old 10-21-2015, 04:03 AM   #1
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rynosback's Avatar
Brand: DRV
Model: 38 RSB3
State: South Dakota
Posts: 2,280
THOR #1658
Question Diesel fuel

Does anyone know when and how far the winter blend goes?

2016 DRV38RSB3
2015 Ram 3500 Regular Cab DRW CTD Asian trans 410 rear
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Old 10-21-2015, 04:02 PM   #2
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Brand: DRV
Model: Mobile Suites 38RSSA
State: Texas
Posts: 206
THOR #2754
Not an easy question to answer, insofar as the United States is concerned. From Wikipedia:

United States

In the United States there is no legislation on a fixed time frame when winter diesel must meet a specific temperature characteristic. The ASTM D 975 standard does not specify the cold flow requirements of diesel fuel. Instead, it suggests that the cloud point be no more than 6C higher than the 10th percentile minimum ambient temperature for the month the fuel will be used. The 10th percentile temperature corresponds to the minimum temperature that would be reached no more than 3 days out of 30 for the month (decile). The ASTM D 975 contains overview maps that show the expected tenth percentile temperature for every month for each state.[34]

Using these guidelines gas stations offer "winter ready diesel" for sale to the Motorist - there are two ways to achieve this:

winter blend - the gas station has blended the No.2 diesel with No.1(kerosene) by some percentage.
winterized diesel - the No.2 diesel has been treated with additives by the diesel supplier.
As the treatment with additives (1:40000[35]) is a cheaper way to enhance No.2 fuel in winter, most stations offer winterized diesel in cold weather conditions. In regions with colder weather, most gas stations offer No.1 fuel at the same pump allowing drivers to decide for themselves on a winter blend.
Rusty, Sandy, 2 Shelties (Coby & Callie) & Conner the Campground Cat
2016 Ram 3500 Longhorn Crew Cab 4x4 Dually, 385/900 Cummins, Aisin AS69RC, 4.10 axle, 39,100 GCWR, 30,050 trailer tow, B&W RVK3600
Current: 2014.5 DRV Mobile Suites 38RSSA #6972 - Previous: 2004 MS 36RE3 #1291
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