DPF- Hope i have the abbreviation correct....

sistafromanothermista

Thanks to everyone who replied (although a lot of posts went waay over my head )

Just to clarify a few points.

It's a Peugeot 308 1.6 diesel 09 plate

When i passed my test, i was taught (maybe wrongly?) 45mph plus should be 5th gear. What i meant by 'the car doesn't like it' it seems to my ears its straining (a bit like doing 25 in 1st iyswim?)

Forgive my ignorance! i'm a bit of a dunce and even at my age (not disclosing that ) i'm not sure of many things when it comes to owning a car





Forgot to add, it doesn't say anything about a DPF in the manual....

CKhalvashi

GolfBravo wrote: »

Diesel soot in DPF is not the problem - it easily burns out during the regeneration cycle. The main problem is ash.

Ash in DPF comes not from fuel but from (mainly) oil additives, and also from engine wear and corrosion - there are some trace elements in the fuel that eventually end up in the DPF, but they are in insignificant quantities. So redlining your diesel in fact increases engine wear and oil burn, therefore it slowly kills your DPF. Premium fuel with fairy dust doesn't make any difference to DPF, changing oil regularly and treating the engine nicely does.

I had no idea of any of that, thanks for explaining it!

I keep the cars for 80-90k mile, so paired with the fact it spends most of its life cruising international motorways (although when I'm in the UK, it's mainly London roads), my driving overall may actually do the engines some good, hence I haven't had problems.

CK

OddballJamie

sistafromanothermista wrote: »

Thanks to everyone who replied (although a lot of posts went waay over my head )

Just to clarify a few points.

It's a Peugeot 308 1.6 diesel 09 plate

When i passed my test, i was taught (maybe wrongly?) 45mph plus should be 5th gear. What i meant by 'the car doesn't like it' it seems to my ears its straining (a bit like doing 25 in 1st iyswim?)

Forgive my ignorance! i'm a bit of a dunce and even at my age (not disclosing that ) i'm not sure of many things when it comes to owning a car





Forgot to add, it doesn't say anything about a DPF in the manual....

Depends on the version, some 1.6hdi had DPF, some didn't. There's a check you can do online with the VIN to find out. Careful with the turbo on that too, not PSAs most reliable engine.

sistafromanothermista

It's a sport if that makes a difference?
What do you mean 'be careful' with the turbo?

Retrogamer

There are problems with some of the 1.6 HDI engines where the longer service intervals coupled with leaking injector seals cause premature failure in the turbos. When it happens, it turns out the inside of the engine is that dirty that it often happens again very soon after a new turbo is fitted. Sometimes a few miles, sometimes a few thousand,

Ultrasonic

GolfBravo wrote: »

According to PSA and GM/Fiat engineers high gear/low revs + berries method is more effective. The car will obviously accelerate, so you will need to take your foot off the accelerator, but you don't need to keep the high revs for the regeneration to work. Short bursts of acceleration and load ensure that the exhaust gas gets really hot fast.

Thanks for explaining. Bursts like this makes sense. (Unless it's done at sufficiently low revs to cause DMF damage I guess...)

As you seem well informed about this, do you happen to have any data about the actual rates of forced DPF regerations at garages or of DPF failures? Just curious as to the real extent of the problem.

Ultrasonic

sistafromanothermista wrote: »

When i passed my test, i was taught (maybe wrongly?) 45mph plus should be 5th gear.

That's about right for most cars from a fuel economy point of view. The issue with driving at too low revs in top gear becomes possible DMF (dual mass flywheel) damage. I used to sometimes drive at 30 mph in 5th gear (about 1,000 rpm) but have stopped doing so for this reason.

sistafromanothermista wrote:

What i meant by 'the car doesn't like it' it seems to my ears its straining (a bit like doing 25 in 1st iyswim?)

I understand. Having changed from driving at lower revs than I do now I remember having similar thoughts about doing 30 mph in 3rd gear (which was partly why I guessed what your concern might be). It's more a question of what you're used to than the car struggling.

sistafromanothermista

Thanks guys.
It has a full service history and i will continue to put it through a full dealership service when required, will this be enough to sort/rectify the problem should it occur?

Ultrasonic

sistafromanothermista wrote: »

Thanks guys.
It has a full service history and i will continue to put it through a full dealership service when required, will this be enough to sort/rectify the problem should it occur?

No. If you had a DPF fault requiring a forced regeneration at a garage, or a more serious repair, then this would need doing at the time (not when the next service is due).

sistafromanothermista

Retrogamer wrote: »

There are problems with some of the 1.6 HDI engines where the longer service intervals coupled with leaking injector seals cause premature failure in the turbos. When it happens, it turns out the inside of the engine is that dirty that it often happens again very soon after a new turbo is fitted. Sometimes a few miles, sometimes a few thousand,

Sorry Ultrasonic, i meant to quote this ^^^^ post.
I will try the revs thing on my next journey. How do i find out if it's even got this filter thing?