this post was submitted on 26 Oct 2023
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[–] SmoothIsFast@lemmy.world 1 points 1 year ago* (last edited 1 year ago)

Yes I am sure about that. When the diesel particulate filters clog up with soot, the ECU triggers post injection events so that extra diesel fuel will burn in the exhaust raising the temperature of the diesel particulate filter and burning the soot out. These events cause your miles per gallon to decrease significantly.