Does seem whack all right. What struck me is business of warning light only. There ought to be a way to put on a gauge, so they can anticipate the need ahead of time. Or at the very least, have an over-ride for emergency vehicles that is good for a day or two.

And why they couldn't just swap in a new filter and send the old ones to some station to be dealt with is beyond me. One hopes the EPA will quickly realize that this is a needless detriment to their public image.

I've not had experience with this setup. The filter can regenerate itself?

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1986 300SDL, 362K
1984 300D, 138K