was thinking, this liquid iron filings thats underneath the spare tyre and provides the engine with a solution to be burned and increases the temp to clean the dpf, is there anything on the market that one can add to the fuel tank that does the same job? was just wondering if it was possible to keep the dpf permanently clean instead of relying on the regeneration process.

i know regular servicing clean oil/air filters and good quality oils help....any idea's?

regards andy

reckon not. from what i understand the car has to be driven above 40 mph for over 20 minutes to clean out the filter and uses more fuel during the process. i think the best solution would be to bypass or remove the thing all together.

There are no quick fixes, otherwise the the vehicle makers would use them. The additive has to be added post engine burn in order to enable combustion inside the DPF. If you remove the DPF, the lack of pressure differential across the bypass will be detected and an error code flagged. It's a crappy system.

rotodiesel.

thanks for the replies....i wasnt intending to remove or replace the dpf, was just looking into the possibility of adding something to the fuel that does exactly the same as when the liquid iron filings is mixed with the fuel during regeneration...except what i was looking for was to add the stuff thats similar too iron filings to the fuel tank when filled up and therefore keep the dpf permanently free of soot...and therefore eliminating the possibility of the car going into limp mode. does that sound feasable or is it another hairbrained idea?

i dont think your fuel system would last to long with iron filings in the diesel:eek:. i've done 30,000 miles now in my 140 facelift without the least sign of trouble. i really dont think the dpf is anything to worry about. just lay your concerns aside and enjoy what is in my opinion a damn good car.

Hairbrained idea. Diesel engines require fuel which is filtered to remove particles of 3 microns and above.

rotodiesel.

so what exactly is this solution that the fuel system takes on board when it comes into effect when the dpf is being cleaned? ive noticed when the dpf is in cleaning mode the engine does seem more powerful and smoother......and after a while reverts back to the normal mode.......less smooth like......all i was wondering was could this solution be added to the fuel tank in measured quantity and have permanent smoothness and at the same time keep the dpf permanently clean?

so what exactly is this solution that the fuel system takes on board when it comes into effect when the dpf is being cleaned? ive noticed when the dpf is in cleaning mode the engine does seem more powerful and smoother......and after a while reverts back to the normal mode.......less smooth like......all i was wondering was could this solution be added to the fuel tank in measured quantity and have permanent smoothness and at the same time keep the dpf permanently clean?

IIRC its UREA which is related to p*ss - but I may be wrong.

The reason it sounds smoother is that, during regeneration, the fuel injectors inject an additional amount of fuel late in the cycle past TDC. This will have the effect of smoothing the peak to minimum pressure in the piston - the fuel is burning for longer during the downward stroke of the piston. It also has the effect of raising exhaust temperatures by quite a bit - needed to start the regeneration process. You wouldnt want this permanently otherwise the DPF would be destroyed.

I've just bought a 140 from Nov '06' pre face lift and not had a chance to experience the regn process, all this talk of DPF has now really scared me! has there been any type of software update etc. that can fix the problem or should I just wait until it happens?

it looks like custom-code can now map out the dpf on the pd170 so it can be removed altogether.

DPF Removal downpipe and Custom-Code DPF-OFF Software RELEASED! - SEAT Cupra.net - SEAT Forum

Its not cheap though.

seems an awful lot of money to shell out, just to extinguish the dpf light .should it come on that is!

think i'll stick to a dealer or a franchised garage to change the oil/filter twice a yr and the air filter yearly and for what it costs the pollen filter every 6mths. i have a routine whereby the car has at least a long motorway drive once or twice a week, so any residue of soot building up in the dpf will soon be at a minimum, compared to doing local driving week in week out like a taxi does....tho my car isnt a taxi.

in the 2 1/2 yrs ive had the car, i have never seen the dpf light up on the dash.....touchwood it will remain extinguished in the yrs to come........unless of course i get enough money to p/x it for the new superb hehe:thumbup:

Can I just add, what most people on here fail to realise when buying the DPF 2.0 is eventually the DPF will need to be replaced. Not the fluid, the DPF!!!.

Eventually the filter will clog up with "ash" and I believe 150mg is the magic number. Went to my dealer prior to buying a superb and its over £1500 to replace.

This is depentant on mileage and type of driving but your could be looking at a replacement in 3 years. Now talk to most dealers and they will deny this and state " We have never replaced one". No because there not 3 years old yet ! A Skoda Master tech told me he is measuring 30-50mg ash at about 12-18 months. Do the Math.

Oh the ash is the stuff post regeneration so the DPF DOES NOT burn back to 0% as some people think.

I did my home work and bought a late 2005 130bhp because of the problems highlighted on this forum.

This is not isolated to Skoda. Citroen and Peugeot have been having major problems. How do I know? My Step Father is a master tech for Peugeot. They love to hate them. Hate the idea and design but love that it keeps them busy during the recession!

Kind Regards

BERR0010

Edited 25 March, 200917 yr by berr0010

It will look nice.