Re: Diesel Particle Filter
A DPF was a significant factor when I bought my Passat but one thing concerns me somewhat. VW stress that Biodiesel should NOT be used with a DPF; however, I understand that our (UK) government is intent on mandating a 5% biofuel content in the not-too-distant future. Does anyone know what effect, if any, this will have? Have VW had anything to say on the subject?
Grateful for any info!
Re: Diesel Particle Filter
It seems that using a BioFuel will have no effect on DPF's. Burning soot is their primary objective and the biofuel will make them even more efficient at it.
Have a look at this BioFuel forum and the PDF document on exactly that.
http://www.biofuelsforum.com/general...lters_dpf.html
Re: Diesel Particle Filter
Thanks Prolfe - I've since come across many similar comments. Only question is, will VW etc change their attitude? Presumably, when B5 is all that's available, they won't have much choice!
Re: Diesel Particle Filter
Quote:
Originally Posted by
Philler Cap
Thanks Prolfe - I've since come across many similar comments. Only question is, will VW etc change their attitude? Presumably, when B5 is all that's available, they won't have much choice!
i'm sure they will just say that it is a different model of DPF or that they can Modify it at a cost.
:)
Re: Diesel Particle Filter
Quote:
Originally Posted by
prolfe
We're seeing some evidence of these systems failing to regenerate too, even on cars used mainly on motorways. It seems that on cars with a very high sixth gear engine revs are too low to generate sufficient exhaust temperature. Occasional harder driving in lower gears should be sufficient to burn off the soot in such cases.
Check the handbook
If you buy a car with a DPF fitted it's important to read the relevant section of the vehicle handbook so that you understand exactly what actions to take if the warning light illuminates and how, if at all, your driving style may need to be adjusted to ensure maximum DPF efficiency and life.
I think mine may be suffering the fate that others have here, 3588 on the clock, let me down yesterday after a long motorway run Manchester to Cornwall on Monday and back to Bristol on Wednesday. VW Assist technician told me it is probably the sensor, garage don't seem to talk to VW assist and think a regeneration is all that is needed, despite Assist having found 0% soot in the filter.
However, I'll see what they do, really hope they don't simply clear the error code....
One question though, why is it necessary to change driving style and have the occaisional run at high revs than you would normally do? Seems to me like the design has not been fully thought through. A high sixth is designed for economy and most people will try to use it, so to be told, ah but occaisionally drop down to 4th/5th for 15 minutes goes against logic.
If my car has what from other forums appears to be an increasingly common flaw my faith in VW will go way down. I simply can't afford the hassle and time of going to garages all the time, as well as potentially being left by the roadside with a family of 5.
Re: Diesel Particle Filter
DPF light came on on my 07 octavia VRS, instructions stated drive 5-10 mins at least 60KmPH, didn't see any thing about low gear, high revs.
Dealer told me it was 267% full !! may require a replacement filter which would not be covered by warrenty. Will dispute that if it comes to it. Will let you all know how i get on next week.:confused:
Re: Diesel Particle Filter
Quote:
Originally Posted by
lesw1ll
DPF light came on on my 07 octavia VRS, instructions stated drive 5-10 mins at least 60KmPH, didn't see any thing about low gear, high revs.
Dealer told me it was 267% full !! may require a replacement filter which would not be covered by warrenty. Will dispute that if it comes to it. Will let you all know how i get on next week.:confused:
my manual says 2000 revs and above for 15-20 minutes.
Re: Diesel Particle Filter
Hi,
a couple of months ago a had a casual chat to a AA mechanic about this problem and he said if the light comes on the dash,i must put the car into third gear, and drive at 3500-4000 RPM for a few miles.
He said this would burn off the soot and recommended i do this at least once a month.
Re: Diesel Particle Filter
Looks like skoda have changed their instructions. May help me if it is not covered by warrenty.