Losing mileage
Cargo Master
Joined: Apr 2018
Posts: 2,409
Likes: 1,123
Winter blend fuel, The strength is made in increments, examples the winter blend fuel that's produced in October, The southern market won't be as strong as the northern market say for Texas versus Minnesota. As winter progresses, The Texas blend starts getting more winterized, the same with Minnesota as we move towards January.
As I understand it fuel is winterized to 20° colder than the average for your area.
Winterize fuel, has less BTUs then summer time fuel.
Chances are, You idle more/ longer when it cold out.
My Diesel generators, which usually have a 24-hour run time with an 80% load, won't make 22 hours in the winter time.
Tuned
Joined: Nov 2019
Posts: 306
Likes: 211
Gas/diesel is usually cheaper in winter than summer, if that's any consolation.
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More Turbo
Joined: Jul 2023
Posts: 744
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I'm with the others, winter blend fuel, tire pressures and longer idle times especially if you are remote starting.
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Actually, diesel is always more expensive in winter due to extra cost of blending for those winter blends, plus home heating oil demand is much higher, driving cost up due to lower supplies.
Lead Driver
Joined: May 2021
Posts: 5,864
Likes: 3,503
From: Uh oh, CA
And yes, I agree with everyone else: winter blend, colder engines, lower air pressure in the tires, maybe just a little more idling than normal. My mpg's took a little bit of a dip about the time the $ went up.
Tuned
Joined: May 2010
Posts: 496
Likes: 130
From: Pleasanton, CA
So what MPG drop are you seeing? A 40 mile drop per tank is not relative being a lot of different size tanks. Maybe someone is siphoning fuel from you?
I agree with some of the above maybe remove the trailer for a bit to see if mileage increases significantly?
Mike
I agree with some of the above maybe remove the trailer for a bit to see if mileage increases significantly?
Mike
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bikemad
1999 - 2016 Super Duty
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Aug 4, 2011 12:53 PM