[childofhedgehog]

The reason diesel folks delete emissions is because the way the new diesel motors are set up actually kills the motor. Buying a new motor (or a whole truck!) is extremely expensive. Now if the automotive industry came out with an efficient diesel that also ran well for more than 100k miles, we’d see a lot less deletions.

[Arainach]

It's far more expensive to run a chemical plant where you just dump your waste products in the river, but that doesn't make it right or legal.