The part traps use heat,(some have tried electric heating coils!) and oxygen just like catalytic converters but they are trying to filter out PM10's where as CATS are creating a reaction to get rid of NOX and hydrocarbons, so the metals inside are different.But both had trouble with clogging, and they changed automotive oil, so it sounds like heavyline oil(Dello,Rotella ect.) is next. I don't want to bring politics to the board but I have been a heavyline tech. for 13 years and I agree with John.M, the goverment is doing more harm than good on this "particular" lol issue.
