re: Why haven’t we gotten rid of DEF yet?

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what exactly does DEF do?

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Makes ding dongs feel good about diesel trucks not billowing black smoke out the exhaust.

My Ram 1/2 ton ecodiesel is deleted. I get 24 mpg in the city, and 28 mpg going 85 on the interstate.

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Makes ding dongs feel good about diesel trucks not billowing black smoke out the exhaust.

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Nope, that's what the DPF and high pressure common rail fuel system does.

For on-highway vehicles selective catalytic reduction makes the most sense out of everything. You get drastic NOx reduction just for skeeting urea over a catalyst bed. No more shitload of EGR. No more horrible timing maps. No more dumb shite.

Like I said earlier, yall are hating on the wrong shite. DEF injection as a form of NOx reduction is excellent. Its all the other ceap that sucks

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They're in their late 60's.

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Pump the brakes, my guy. Phil is 68 and Joe is 66, but Sav is 65, Viv is 63 and Rick is 62.

The average age of the band is under 65 (until later this year, at least).

So, why don't you pour some sugar on that?

It’s actually a Bush era policy.

Please tell me how DEF screws up engines when the SCR system is an aftertreatment process?

Now, it you wanna talk about EGR, VGTs, and all the other stuff that works in conjunction with the SCR system, I’ll grant you that. But your post makes you sound like a dumbass.

Also, Tier 4 final regs reduced the amount of emissions 90% vs. where we were in 1998 when this was all launched. So, to say it does nothing is patently false.

Do we need it at this level? Not sure. I disagree with it on off road vehicles. But semi trucks idling in Baton Rouge rush hour traffic- absolutely 100%

If DEF helps with that God awful diesel exhaust smell, im all for it. That smell makes me nauseous. I hate getting behind a diesel vehicle with that smell.

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90% of people driving vehicles that require DEF do not have a need for that vehicle. I don’t feel sorry for them.

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You one of those “according to his needs” guys?

FTR I don’t own a vehicle that needs DEF, my skin in this game is principle.

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I hate freedom of choice and love when government dictates to me what I can do or buy.

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This is actually a very popular opinion on TD

From McPherson Oil Products:

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When Commercial Fuel Services Started Including DEF

For years, truck drivers and fleet managers didn’t have to worry about smog-proof equipment on their vehicles. Come 2008, the EPA mandated that all three-quarter-ton and larger trucks had diesel particulate filters installed.

Then, the EPA tightened the restrictions even more in 2010. The agency required medium- and heavy-duty vehicles to step it up a notch by reducing engine emissions, especially for NOx and particular matter (PM) by incorporating DEF.

Why the EPA Changed Regulations for Commercial Trucks

The purpose of these new regulations was to ultimately improve air quality. NOx and PM are linked to respiratory and cardiovascular diseases, as well as asthma, acute respiratory symptoms, chronic bronchitis, and decreased lung function.

The agency predicts that these changes will prevent 8,300 premature deaths, greater than 9,500 hospitalizations, and 1.5 million lost work days due to sickness. This comes to a total savings of $70.3 billion by 2030.

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Idiots like that are one of the primary reasons why the EPA tightened the emmissons standards.

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You offered criticism of people’s decisions.

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Which part is criticism?