how long can I store diesel fuel before it goes bad?

   / how long can I store diesel fuel before it goes bad? #11  
my question would be has any one ever seen the fuel gel because of long term storage?
 
   / how long can I store diesel fuel before it goes bad? #12  
Skyco said:
Might want to look at this-Power Service 9-1-1
The spec sheet says- "Reliquefies gelled fuel in minutes"
Can't vouch for it, never have used it.
It's not that simple. You have to pull the fuel filter and fill it with a 50/50 mix of the product and diesel fuel. No word on where you are supposed to get that diesel fuel from, if you are stuck by the side of the road. Presumably you can't use the gelled stuff already in the filter, but the instructions don't really say.
 
   / how long can I store diesel fuel before it goes bad? #13  
SnowRidge said:
It's not that simple. You have to pull the fuel filter and fill it with a 50/50 mix of the product and diesel fuel. No word on where you are supposed to get that diesel fuel from, if you are stuck by the side of the road. Presumably you can't use the gelled stuff already in the filter, but the instructions don't really say.


Yes, usually that is exactly what is done.
 
   / how long can I store diesel fuel before it goes bad? #14  
KICK said:
my question would be has any one ever seen the fuel gel because of long term storage?
No. The fuel will not gel due to length of time it is stored alone. The fuel gelling is strictly temperature related.
 
   / how long can I store diesel fuel before it goes bad? #15  
KICK said:
...has any one ever seen the fuel gel because of long term storage?
Because of long term storage? No.
 
   / how long can I store diesel fuel before it goes bad? #16  
SnowRidge said:
It's not that simple. You have to pull the fuel filter and fill it with a 50/50 mix of the product and diesel fuel. No word on where you are supposed to get that diesel fuel from, if you are stuck by the side of the road. Presumably you can't use the gelled stuff already in the filter, but the instructions don't really say.
What i've seen is dumping the gelled fuel out of the filter, filling it half full of the product, putting the filter back on and then priming the filter the rest of the way fuel... after the product has begun to work in the tank already. Kind of a pain in the *****.
 
   / how long can I store diesel fuel before it goes bad? #17  
Taking the filter off and refilling it with kerosene would do the same thing.

In fact, that's probably what you're doing.
 
   / how long can I store diesel fuel before it goes bad? #18  
you know the chances of a diesel engine that has been running stalling on the side of the road because the fuel gelled are minimal.

once old dr diesel is running the natural fuel flow of the engine starts to heat its own fuel and return it to the tank

gelling situation occurs far more frequently in a vehicle left sitting for a long time period in sub zero temps.

who in the 7734 is out on their tractor in those conditions anyway?
 
   / how long can I store diesel fuel before it goes bad? #19  
KICK said:
you know the chances of a diesel engine that has been running stalling on the side of the road because the fuel gelled are minimal.

once old dr diesel is running the natural fuel flow of the engine starts to heat its own fuel and return it to the tank

gelling situation occurs far more frequently in a vehicle left sitting for a long time period in sub zero temps.

who in the 7734 is out on their tractor in those conditions anyway?

That's true and many times people mistake water freezing in their system as fuel gelling. Most engine installations are pretty good nowadays, with the filter tucked up nice and close to the engine and some even have heaters and going-down-the-road gelling is almost non-existent. However, frozen water collecting in a low place and freezing is something even the best anti-gel procedures can't do anything about.

When I hear people say their fuel gelled at +28 F, I usually think "probably not" but water will certainly cause problems at those temps.

Every year people post on here about how their tractor fired right up at -30F. Not me. I have never even tried to start a diesel at that low of a temperature and probably never will. I can't imagine a non life-threatening situation in which I would want to be outside on a tractor when it's that cold. Even if it would start.
 
   / how long can I store diesel fuel before it goes bad? #20  
Gelled fuel filter, not frozen water from last winter. Happened at 26 deg. F. The properties of ULSD have greatly changed the characteristics of how diesel fuel gells. Interesting to note that the filter had to be warmed to around 68 deg. F. before the wax formation started to reliquify. ULSD is a whole different monster than LSD. The actual chemical makeup of the wax structure has changed and with it how it acts.

cloggedgelledfilter.jpg
 

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