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Originally Posted by RustyLugNut
The funny thing is, with almost 30 million people in the affected zone, the millions of tiny lawn mowers and weed whackers which have disproportionate emissions output for their size roughly equal the emissions output of the large rail heads which pass through Southern California.
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Not to mention scooters and to a lesser extent motorcycles. Can't understand why you can still buy a scooter that smells like a lawnmower.
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Diesel Particulate Filters (DPF) work and they work well.
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If you like nanoparticles that bypass your lungs and go straight into your blood stream. At least with black smoke you can turn the a/c to recycle or hold your breath.
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A lady on YouTube has the same vehicle and is getting names for a class action suit against Dodge and Cummins for selling a faulty vehicle. She is a soccer mom who never does any heavy towing. Her DPF is constantly running cool and cannot even initiate a purge cycle so the DPF clogs up and she is constantly at the dealer getting cleanouts. So, are DPF's faulty? Well, as Oil Pan 4 pointed out in another post, drive cycles has a lot to do with system effectiveness.
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The problem is that if you want/ need a certain type of vehicle, nowadays you're being forced to buy diesel and diesel usually means a DPF. Most SUV's are turning to diesel only as are small pickups and all vans. My van is used only in the city, there isn't even a road that I can drive on fast enough to complete a regen on. One time I ended up doing 200km one night just to complete a regen. Overall I drove about an extra 5% just doing regens every 250km or so. Since discovering DPF cleaner actually works, which I need to add to every other tank, the problem is solved, but if you just buy DPF cleaner at the parts store (rather than the truck sized 5L bottle), it's awfully expensive. More over, the handbook for any DPF car I've ever seen makes no mention of DPF cleaner (except of course PSA which come with an onboard DPF cleaner tank), only to 'pull onto a motorway and drive the car at 2000rpm until the light goes out' (about 20mins)! How wasteful is that? Especially if you need to do that every 250kms, and I did my best to keep EGT's up where possible.
I fully expected DPF issues buying my TDi, but nobody makes a midsize petrol van anymore, excepting Toyota's archaic Hi-ace.
Also, as cars get more aerodynamic and get taller gears, legal highways speeds are no longer enough to keep DPFs hot enough to do passive regens in the latest euro diesel sedans.