From what I understand gpfs shouldn't have anything like the issues older dpf engines had. As petrol has a much less sooty exhaust in the first place and a higher exhaust temp to help burn the soot etc that is produced. I guess only time will tell how accurate that claim will be. 

My 2 cents go like this

Dpfs is an attempt to cover up one major defeciency of diesel engines

Want it or not diesels are going to have airborne particles it is just physics. 

A good example of a dpf is a wall bubbling from moisture absorption

Instead of trying to figure out where the water is coming from you just use putty and repair it. 

That's a dpf

Put really simply it wasn't manufacturers that decided to put dpf/gpf's on our cars, it's government legislation we have to thank for them since euro 1 regs came out and evolved to where we are now. Instead they should have been driving us towards EV's back then and we might have had a viable charging infrastructure today instead of the non-existent one we have now with government trying to force EV's down our throats with nowhere to charge them. 

13 hours ago, Gmac983 said:

You've clearly read the whole thread, so you'll have seen I pretty much said what you've said

 

You said:

 

On 20/10/2019 at 09:28, Gmac983 said:

If you are aware that the car is attempting a regen on the dpf, then perhaps as an aid you should run the car in the described method in the dpf section of your handbook e.g. elevated engine revs in a lower gear above certain speeds. 

 

as I quoted previously.  What I was saying is that the handbook does not tell you to do that unless the DPF light comes on.  It says nothing about "being aware that the car is attempting a regen".  Here is the only text from the 2017 edition of the owner's manual relating to the DPF:

 

 

13 hours ago, Gmac983 said:

And 3 times in nine + years...

 

Three times that I noticed (as I said).  They very likely did it at other times that I didn't notice.  It is, after, just the car getting on with doing what it is supposed to do.

 

13 hours ago, Gmac983 said:

I presume you are just fishing for an argument?

 

Not in the slightest, but you seem to be keen to engage in one anyway.  Welcome to my ignore list.

Normal driving is not enough to clear out the emission system and the regen only starts when it hits a set limit. Hence you can do a long trip without a regen and one starts on the next short trip.

21 minutes ago, ejstubbs said:

Not in the slightest, but you seem to be keen to engage in one anyway.  Welcome to my ignore list.

 

 

Oh I'm heart is broken... 😭

Edited 22 October, 20196 yr by Gmac983

On 20/10/2019 at 10:28, Gmac983 said:

Tbh the car is just doing what it needs to do to maintain its dpf.

 

That is what I said also. 

 

Plus as I said skoda and citroen master techs (take from that what you will) advised (quite logically in my view) to drive to the handbook regardless of dpf light. 

 

And just for the record I by no means was picking an argument. I was mearly passing on the info I had been given by main dealers. Thank you. 

Edited 22 October, 20196 yr by Gmac983

1 hour ago, kenfowler3966 said:

Normal driving is not enough to clear out the emission system and the regen only starts when it hits a set limit. Hence you can do a long trip without a regen and one starts on the next short trip.

 

Passive regeneration can be quite effective, if your commute is optimised for keeping the DPF clean.

 

Skoda know that very few of us drive to these 'ideal conditions' so in addition to the preset limits of restricted flow triggering an active regeneration, they also programmed in a minimum mileage between active regens, so even if the soot load itself isn't enough to trigger a regen, once you hit a certain mileage threshold the car will initiate a regen anyway.

 

As noticed by @OldBoyScout, my 62 mile commute involves a nice varied mix of wheel and engine speeds and engine loads, yet there have been quite a few occasions where a regeneration has been initiated a few miles from home, and thus interrupted.

 

Such is life, 8 years and 160,000 miles, no DPF lights for me. Fingers crossed it stays this way for some time yet.

15 hours ago, Gmac983 said:

For RicardoM's benefit if he doesn't know already. Jimmy crankie is not in fact a Scottish comedic national treasure but in actual fact is our first minister Nicola Sturgeon. 

Why crankie?

Edited 22 October, 20196 yr by RicardoM

The krankies (I spelled it wrong last time) were a husband and wife comedy duo from scotland. The Krankies was just their stage name and Nicola Sturgeon looks a lot like Janette Tough's character wee Jimmy krankie and is widely referred to as such. 

Edited 22 October, 20196 yr by Gmac983