Good Sam Club Open Roads Forum: Tow Vehicles: Ram 2500 DEF fluid
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rhagfo

Portland, OR

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Posted: 11/19/20 10:36pm Link  |  Quote  |  Print  |  Notify Moderator

wanderingbob wrote:

On my 2500 CTD , when gauge sez 1/2 I pour in 2 1/2 gallons . But you are correct , it will say full and then " bang " , it is on half !


Well I also wait until the gauge is at 1/2 tank, then add a 2.5 gallon jug. It will stay on full for a while before dropping.


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Huntindog

Phoenix AZ

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Posted: 11/20/20 02:30am Link  |  Quote  |  Print  |  Notify Moderator

As has been noted; DEF shelf life is something to be aware of, and consider when filling it.
Shelf life drops like a rock as tempertures increase.
At 100 degrees it is down to 6 months or so.
Since I live in Phoenix AZ, and do not use my trucks as daily commuters, this is a real concern for me. Realize that it is not just the ambient air temperture to consider, but the actual DEF temperture!. When it is 115 in phoenix, and the truck is being driven, the DEF temps will be a lot hotter than 115!

So I keep my DEF tank low. I put 2.5 gallons of fresh DEF in when the warning appears.
If I have a trip coming up where I will need more, then I put more in at that time.



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ShinerBock

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Posted: 11/20/20 08:07am Link  |  Quote  |  Print  |  Notify Moderator

And just think, you have to use all of this DEF just to save a very tiny .01 g/km versus older trucks that didn't use it. I wonder if that .01 g/km is worth the added pollution from the jugs and chemical plants used to make DEF. Probably not. Heck, even our older trucks without DEF and EGR's had a lower NOx limits than even the latest Euro emissions standards.

One would think that their mortality rate would be lower if NOx is as bad as the EPA says it is in the US given that the Euro emissions have been a lot higher than ours for decades and they have many times more diesels on the road than the US. However, our mortality rate is near the bottom versus most European countries because it is acceptable by the government to eat 10 cheeseburgers a week, but how dare you release an added .01 g/kw of NOx even though other countries are much higher without issues.

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Grit dog

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Posted: 11/20/20 10:37am Link  |  Quote  |  Print  |  Notify Moderator

My def gauge is bottomed out on Empty, and I never add any, but it runs GREAT. Will this hurt anything?






Oh wait! The exhaust is laying in my shop! And the truck runs like it should!!!!
Hahahahaha


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Fisherman

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Posted: 11/20/20 04:29pm Link  |  Quote  |  Print  |  Notify Moderator

Grit dog wrote:

My def gauge is bottomed out on Empty, and I never add any, but it runs GREAT. Will this hurt anything?
Oh wait! The exhaust is laying in my shop! And the truck runs like it should!!!!
Hahahahaha


Yup you're one of the ones that makes the world hate diesels.

Cummins12V98

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Posted: 11/20/20 06:49pm Link  |  Quote  |  Print  |  Notify Moderator

Grit dog wrote:

My def gauge is bottomed out on Empty, and I never add any, but it runs GREAT. Will this hurt anything?






Oh wait! The exhaust is laying in my shop! And the truck runs like it should!!!!
Hahahahaha


Drove my Son’s 15 3500 and let’s just say scalded dog !!! For 9k it is FAST.


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Cummins12V98

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Posted: 11/20/20 06:51pm Link  |  Quote  |  Print  |  Notify Moderator

Fisherman wrote:

Grit dog wrote:

My def gauge is bottomed out on Empty, and I never add any, but it runs GREAT. Will this hurt anything?
Oh wait! The exhaust is laying in my shop! And the truck runs like it should!!!!
Hahahahaha


Yup you're one of the ones that makes the world hate diesels.


PLEASE explain why. My Son’s truck runs VERY CLEAN.

Bionic Man

Colorado

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Posted: 11/20/20 07:06pm Link  |  Quote  |  Print  |  Notify Moderator

Cummins12V98 wrote:

Fisherman wrote:

Grit dog wrote:

My def gauge is bottomed out on Empty, and I never add any, but it runs GREAT. Will this hurt anything?
Oh wait! The exhaust is laying in my shop! And the truck runs like it should!!!!
Hahahahaha


Yup you're one of the ones that makes the world hate diesels.


PLEASE explain why. My Son’s truck runs VERY CLEAN.


I think the assumption is that most of them don't. Just too many people think its appropriate/necessary to roll coal. While there trade offs with the current emissions requirements, I for one appreciate not seeing black smoke billowing from trucks, as well as being able to follow behind a diesel and not have to turn my HVAC to "recirculate" to avoid the exhaust smell.


2012 RAM 3500 Laramie Longhorn DRW CC 4x4 Max Tow, Cummins HO, 60 gallon RDS aux fuel tank, Reese 18k Elite hitch
2003 Dodge Ram 3500 QC SB 4x4 Cummins HO NV5600 with Smarty JR, Jacobs EB (sold)
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Fisherman

Angus, Ontario, Canada

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Posted: 11/20/20 07:27pm Link  |  Quote  |  Print  |  Notify Moderator

Bionic Man wrote:

Cummins12V98 wrote:

Fisherman wrote:

Grit dog wrote:

My def gauge is bottomed out on Empty, and I never add any, but it runs GREAT. Will this hurt anything?
Oh wait! The exhaust is laying in my shop! And the truck runs like it should!!!!
Hahahahaha


Yup you're one of the ones that makes the world hate diesels.


PLEASE explain why. My Son’s truck runs VERY CLEAN.


I think the assumption is that most of them don't. Just too many people think its appropriate/necessary to roll coal. While there trade offs with the current emissions requirements, I for one appreciate not seeing black smoke billowing from trucks, as well as being able to follow behind a diesel and not have to turn my HVAC to "recirculate" to avoid the exhaust smell.


Bingo Bionic Man.

Skidus1

Utah

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Posted: 11/20/20 08:49pm Link  |  Quote  |  Print  |  Notify Moderator

I turn my recirculate on whenever I’m following an older PS or non dpf truck blowing smoke. I’ve been the one spewing smoke and try to avoid it now.

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