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When does winter fuel begin dispensing?

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Old Oct 28, 2011 | 09:25 PM
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When does winter fuel begin dispensing?

Hey guys, I was just wondering when winter fuel begins running through our pumps? I live up here in new york and have seen a 2 mpg drop in the past few weeks. Almost immediatley. I was consistently getting 15.8 to 16, I can't remember what I was getting last winter but up to a couple of weeks ago it just dropped right off. I've replaced the icp due to oil in the issensor, that increased it about .2. I replaced my 6637 with a brand new bhaf air filter, checked my air pressure, rebuilt my ipr, brakes are lubed up and free, turbo boost is where it always is. The only thing I can think of is that the up pipes are leaking so bad that their causing my massive drop in mpgs, there is soot there, so they are leaking, but the thing goes like a bat out of hell. Or winter fuel is draining my mpgs?
 
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Old Oct 29, 2011 | 12:53 AM
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I also forgot to mention I cleaned the ebpv sensor, and tube, and replaced front and rear differential fluids with synthetic as well as changed the transmission fluid. I'm out of possibilities. Any ideas left?
 
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Old Oct 29, 2011 | 03:22 AM
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Diesel jumped ten cents a gallon in one day about 2 weeks ago. I'd say we're using winter mix now.

For those who think it's too early, not everybody uses their full tank in one week... and we have snow in our long-term forecast (PNW). It's going to be one of those winters.
 
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Old Oct 29, 2011 | 10:24 AM
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I guess that explains it, diesel jumped from 3.89 here to 4.09 a double kick in the butt. I guess I should probably be thanking them though, the past two weeks we've had temperatures as low as 20 degrees here and I haven't had any issues.
 
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Old Oct 29, 2011 | 11:06 AM
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North of latitude 42* in NY fuel is supposed to be winterized for -3*C in OCT, South of 42* is -1C in OCT.
 
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Old Oct 29, 2011 | 12:29 PM
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Originally Posted by honeydew
North of latitude 42* in NY fuel is supposed to be winterized for -3*C in OCT, South of 42* is -1C in OCT.
Travis, where did you find this out?
 
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Old Oct 29, 2011 | 12:30 PM
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Originally Posted by nlemerise
Travis, where did you find this out?
Here is the chart where I got the info:

ASTM pour point temperatures
 
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Old Oct 29, 2011 | 12:45 PM
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Ahh I see. Well, I guess that settles it then, there's winter fuel pumping through my 7.3's veins. That explains my fuel mpg defecit,
 
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Old Oct 29, 2011 | 12:54 PM
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Originally Posted by honeydew
Here is the chart where I got the info:

ASTM pour point temperatures
Thanks to you...and rep's sent .
 
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Old Oct 29, 2011 | 12:59 PM
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Ahh I see. Well, I guess that settles it then, there's winter fuel pumping through my 7.3's veins. That explains my fuel mpg defecit. Ugh..can't fix that sensor I guess. thank you for the useful information.
 
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Old Oct 29, 2011 | 03:37 PM
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Originally Posted by dothedew192
Ahh I see. Well, I guess that settles it then, there's winter fuel pumping through my 7.3's veins. That explains my fuel mpg defecit. Ugh..can't fix that sensor I guess. thank you for the useful information.
I see no decrease in mileage (and I have records going back many years) due to winterized D2 (though I do see a reduction in mpg operating in very low temperatures)...the reduction of btu value in the winter blend is estimated at 1%...D2 is about 130,000 btu/gal, so that is a reduction to about 128,700 btu/gal. A loss of 2 mpg when you normally get 16 mpg is a 12+% decrease in mileage. I'd suggest looking for other causes, but I can't guess what it might be.
 
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Old Oct 29, 2011 | 05:15 PM
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Oh, I'm at a loss as to what to look for then? What the heck could cause this? I'm frustrated with it as I thought I had hit all the basis except the up pipes.
 
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Old Oct 29, 2011 | 05:19 PM
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Originally Posted by dothedew192
Oh, I'm at a loss as to what to look for then? What the heck could cause this? I'm frustrated with it as I thought I had hit all the basis except the up pipes.
Must be the uppies then...
 
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Old Oct 30, 2011 | 02:41 PM
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Fuel is blended differently. It depends on the percent of Number 1 fuel blended in to the number 2 fuel. Different suppliers and different locals have different blends. You could easily see a 2 mpg loss.
 
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Old Oct 30, 2011 | 05:03 PM
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I too have fuel records going back over 300K for my truck and I see a 2 to 3 MPG decrease every October. If I travel out of area and get a tank of "good" fuel that is less winterized I will get the mileage back I just have to be sure to add some antigel before I get over the mountains.
 
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