EPA de regulation roll back.

GreenGO Juan · Jul 31, 2025

more talk about EPA rolling back regulations on Light and medium duty truck. Potentially no more DEF on diesels.

EPA Releases Proposal to Rescind Obama-Era Endangerment Finding, Regulations that Paved the Way for Electric Vehicle Mandates | US EPA

The U.S. Environmental Protection Agency (EPA) Administrator Lee Zeldin released the agency’s proposal to rescind the 2009 Endangerment Finding, which has been used to justify over $1 trillion in regulations.

www.epa.gov

akmike47 · Jul 31, 2025

All that cat piss does is cause issues

softcock · Jul 31, 2025

Does this mean nothing ?? to indivdual States that have setup their own DEQ Laws, enforced standards, and Tax paid for vehicles ownership.
.

GreenGO Juan · Aug 1, 2025

softcock said:
Does this mean nothing ?? to indivdual States that have setup their own DEQ Laws, enforced standards, and Tax paid for vehicles ownership.
.

Only way this means nothing is if it doesn’t happen, as nothing has changed yet.

TheHorta · Aug 1, 2025

DPF and DEF destroyed diesels.

stefan73 · Aug 1, 2025

TheHorta said:
DPF and DEF destroyed diesels.

I hate DPF on my Kubota! That crap should have never been placed on AG vehicles!!!!

GrayRyder · Aug 1, 2025

What's the effect on an engine designed to use DEF if you don't put DEF in it?

GreenGO Juan · Aug 1, 2025

GrayRyder said:
What's the effect on an engine designed to use DEF if you don't put DEF in it?

DEF is sprayed into the exhaust as part of the catalyst process. A factory ECU, when the tank goes empty( and other emissions related components) will put you in a fault mode, pull power, limit speed and eventually shut the engine down.

Its the EGR that causes issues in the engine as diesels are direct injection, the intake and valves get "sooted" up.

GrayRyder · Aug 1, 2025

So despite the fact that DEF may no longer be required for engines built in the future, any engine designed for it will still need it? Thanks for your answer.

GreenGO Juan · Aug 1, 2025

GrayRyder said:
So despite the fact that DEF may no longer be required for engines built in the future, any engine designed for it will still need it? Thanks for your answer.

Unless you mod it. Yes.

AmmoFort · Aug 1, 2025

GrayRyder said:
So despite the fact that DEF may no longer be required for engines built in the future, any engine designed for it will still need it? Thanks for your answer.

Unless you delete it yes.

chevy_man · Aug 1, 2025

GrayRyder said:
What's the effect on an engine designed to use DEF if you don't put DEF in it?

It doesn't run..

Used to be easy to delete the stuff, but lately it's a nightmare because the EPA fined a lot of tuners out of existence.

mtrmn · Aug 1, 2025

GrayRyder said:
What's the effect on an engine designed to use DEF if you don't put DEF in it?

This should make it legal to delete it. Probably trade for a new one without it would be better though.

stefan73 · Aug 1, 2025

If you do a true delete with the ECM being reprogrammed the result will be better fuel mileage/better fuel economy and improved reliability since you aren't pumping a lot of crap back into your engine via the EGR.

Defiantly_Not_Bender · Aug 1, 2025

You understand this was done on purpose and not new? Planned Obsolescence.

History tells once again.

The Great Lightbulb Conspiracy

The Phoebus cartel engineered a shorter-lived lightbulb and gave birth to planned obsolescence

spectrum.ieee.org

GrayRyder · Aug 1, 2025

Yeah, I've had one of the first diesel VWs in the US in 1978 - a VW Rabbit, then an 81, then an 86. Missed a few years and got a...91, I believe. Then got out of diesels altogether when they went to low sulphur fuel and the fuel pumps started ragging out and then picked up a "13 a few years ago. The 13 wasn't as much fun as it had that tiptronic automatic AND I had to dump DEF in it. Man in those early diesels I used to get 51mpg on those standard shift VWs - loved those cars. Still looking to pick one up.

Can't tell you how many times my brother an I used to tear the motor down and change the timing belt. One time the timing belt broke ans we REALLY had to tear it down to see the damage the valves did to the piston heads when the belt broke. Ah, those were the days.

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EPA de regulation roll back.

GreenGO Juan

Standing on the edge of forever.

EPA Releases Proposal to Rescind Obama-Era Endangerment Finding, Regulations that Paved the Way for Electric Vehicle Mandates | US EPA

akmike47

Rumpleforeskin King of the Poors

softcock

novice judgmental prick

GreenGO Juan

Standing on the edge of forever.

TheHorta

Nest-stirring pot-poker.

stefan73

Sergeant

GrayRyder

I stand with Israel

GreenGO Juan

Standing on the edge of forever.

GrayRyder

I stand with Israel

GreenGO Juan

Standing on the edge of forever.

AmmoFort

Supporter

chevy_man

Old Salt

mtrmn

Sergeant

stefan73

Sergeant

Defiantly_Not_Bender

Gunny Sergeant

The Great Lightbulb Conspiracy

GrayRyder

I stand with Israel

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