[rakirank]

I have seen videos in the past by this youtuber mukesh chandra gond who has 1.2 million subscribers.

I am aghast to see the following video on how to clean a clogged DPF. His methods seem disastrous to the environment. Just look at the pollutants being released!

What is the point of banning cars if you are going to let garages/mechanics
freely pollute the environment or undo the benefits of DPF?

https://youtu.be/fOUzXFYv2CI?si=Mx0ltwrrxNTGnALg

[pkulkarni.2106]

Not an expert, but isn't the obvious solution to clogged DPF is (a) driving the car on highway, where the speed & RPM is higher or (b) driving in the city in lower gear so that you rev it high?
Curious to know where the soot goes in above case.

[Y@SH]

Well I am no expert, but we clean all filters either by just water , chemicals, compressed air or a combination of all. This could be a method to try rather than replacing the whole unit, but we cannot really judge the efficiency of the filter in anyway.

However I am more concerned with the toxic water being released into the drain without being treated. We need to have guidelines and strict rules for toxic waste disposal for such waste and also used oils. So many times I have experienced well set up garages and also road side garages just dumping the used oils into open drains, which shocks me.

[ike]

If the particulate matter is being released into the environment in this manner, why have the filter at all in the first place? Is this how DPF gets cleaned?

[for_cars1]

Originally Posted by Y@SH

... I am more concerned with the toxic water ...

Originally Posted by ike

.. Is this how DPF gets cleaned?

The primary residues in the DPF filter is Soot and Ash.
Soot forms the majority of the debris which is primarily composed of carbon, small quantity of sulphates and other products of the diesel combustion. Soot is the stuff that can be further reduced through regneration.
The ash is in much smaller quantities and is incombustible and composed of metallic waste. The ash cannot be further removed by engine regen process.

This is a standard way of cleaning the DPF filter, first by blowing air and then flushing with water. Whatever shown in the video is a fairly standard process in other countries as well.
The folks doing the airblow process need to use particulate filter masks to avoid inhaling the soot and ash.
Flushing with water is fine, its not that environmentally harmful as its mostly carbon soot and the ash particles are not soluble. Its just getting flushed out with water and safer then being expelled into air.

[audioholic]

I came across this video few days ago. Had the same thought in mind. He shows through the diagnostic tool that the DPF is 94% clogged, but does not mention anything about trying a forced regeneration to burn off the soot. And while I was surprised to see Hydrogen peroxide used, I was equally shocked to see shampoo being mixed with it.

I have read about DPF cleaning but that's done using specific tools that will reverse flush the DPF with water at high pressure and some other oxidation agents. But shoving in a pressure washer into the DPF and stuffing it with soap and stuff is something I would not want to do it.