Cold weather issue
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Mountain Pass
Joined: Jan 2022
Posts: 179
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Cold weather issue
I just got a call from my brother, he has got a 2018 F 250, with the 6.7. It's around -5 where he is at. He said his truck started fine and ran well on his way to work, only a few miles, but when he went to go home he got a low fuel pressure warning, and truck is in limp mode. Says he has about a 1/4 tank of fuel, no anti gel..........I told him to fill it up, and put some anti gel in it......any ideas? Gelled fuel?
FTE Legend
Joined: Mar 2017
Posts: 31,775
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From: Western NY
Definitely gelled fuel... only thing I use is K100D+.
He should probably change the filters with a set of Motorcraft fuel filters and use some additive.
Just bringing up what I use... there's plenty other choices of anti gel additives.
He should probably change the filters with a set of Motorcraft fuel filters and use some additive.
Just bringing up what I use... there's plenty other choices of anti gel additives.
Last edited by Overkill2; Dec 22, 2022 at 01:24 PM. Reason: Add to post
FTE Legend
Joined: Mar 2017
Posts: 31,775
Likes: 9,113
From: Western NY
But I guess if it's running without a low fuel pressure warning, it might be set...
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Lead Driver
Joined: Nov 2005
Posts: 5,216
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From: Kaysville Utah
If he is running OK. The fuel will warm and as it loops around it will thaw the filters.
Usually changing the filters is because they are gelled up and nothing will pass thru them,
Your diesel fuel is heated as it passes over the engine on the way to the injectors. If the injectors don't use the fuel. It returns to the tank, ( warming the fuel in the tank)
So gelling up is usually a problem of trucks being turned off and sitting in the cold. If the engine is running and the fuel is circulating, You don't have as great of risk of gelling.
Usually changing the filters is because they are gelled up and nothing will pass thru them,
Your diesel fuel is heated as it passes over the engine on the way to the injectors. If the injectors don't use the fuel. It returns to the tank, ( warming the fuel in the tank)
So gelling up is usually a problem of trucks being turned off and sitting in the cold. If the engine is running and the fuel is circulating, You don't have as great of risk of gelling.
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Hotshot
Joined: Oct 2015
Posts: 19,681
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From: Wyoming
Your diesel fuel is heated as it passes over the engine on the way to the injectors. If the injectors don't use the fuel. It returns to the tank, ( warming the fuel in the tank)
So gelling up is usually a problem of trucks being turned off and sitting in the cold. If the engine is running and the fuel is circulating, You don't have as great of risk of gelling.
So gelling up is usually a problem of trucks being turned off and sitting in the cold. If the engine is running and the fuel is circulating, You don't have as great of risk of gelling.
If the above is true, It seems like it could take a good while for the engine to get hot enough to warm the fuel.
Hotshot
Joined: Oct 2015
Posts: 19,681
Likes: 12,803
From: Wyoming
For anyone reading this, Diesel #1 has a lower gel point than #2. It's more expensive and the MPG isn't as good, but better to have an engine that runs than one that doesn't. #2 is gelled at ~17°F. I can't find the gel point of #1, but it's probably similar to kerosene (just a guess). I wouldn't run #1 for very long, just when you need it (it's going to be cold and you can't find an anti-gel additive).
Hotshot
Joined: Dec 2005
Posts: 10,244
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From: Chino Valley, Arizona
For anyone reading this, Diesel #1 has a lower gel point than #2. It's more expensive and the MPG isn't as good, but better to have an engine that runs than one that doesn't. #2 is gelled at ~17°F. I can't find the gel point of #1, but it's probably similar to kerosene (just a guess). I wouldn't run #1 for very long, just when you need it (it's going to be cold and you can't find an anti-gel additive).
Hotshot
Joined: Dec 2005
Posts: 10,244
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From: Chino Valley, Arizona
shamelessly copied from Exxonmobile,
Jet A, which is mainly used in the United States, must have a freeze point of minus 40ºC or below and does not typically contain static dissipator additive. Jet A-1 must have a freeze point of minus 47ºC or below and for locations outside the United States, this fuel normally contains static dissipator additive. There are other key differences between the manufacturing specification within the United States and Europe/Africa/Middle East/Australasia.
Jet A, which is mainly used in the United States, must have a freeze point of minus 40ºC or below and does not typically contain static dissipator additive. Jet A-1 must have a freeze point of minus 47ºC or below and for locations outside the United States, this fuel normally contains static dissipator additive. There are other key differences between the manufacturing specification within the United States and Europe/Africa/Middle East/Australasia.
Hotshot
Joined: Oct 2015
Posts: 19,681
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From: Wyoming
I looked up the gel point for kerosene. -40°F!! Dang, that's low. Then again, there's a lot of wax in diesel #2.