Best DPF cleaner?

Huza91 · 06-08-2019 9:42am #1

Hi All,

Just wondering what the best DPF cleaner out there is as I need to purchase some for my car? I've heard of the below brands but I'm wondering which do you find the best.

JLM Extreme Clean
Redex DPF Cleaner
Wynns Diesel Particulate Filter Cleaner
TRIPLE QX High Performance DPF Power Clean
Cataclean Diesel DPF Cleaner
STP Diesel Particulate Filter Cleaner
RAC DPF Cleaner

Thanks all

CoBo55 · 06-08-2019 12:21pm

Remove+delete... End of story, best few bob you'll ever spend.

Duckjob · 06-08-2019 12:58pm

CoBo55 wrote: »

Remove+delete... End of story, best few bob you'll ever spend.

Pretty sure you're advising something that's illegal there.

Not to mention being highly harmful to peoples health.

Lewis_Benson · 06-08-2019 1:14pm

CoBo55 wrote: »

Remove+delete... End of story, best few bob you'll ever spend.

Dont do this,
The DPF is there for a reason.

Is the DPF clogged?
If so, have you been able to initate a regeneration?

If you cant initiate a regen then you may need to bring it to a DPF cleaning company, there are a few about.

What kind of driving do you do on a daily basis, and how many miles are on the engine now?

ronnie3585 · 06-08-2019 2:16pm

Buy a petrol instead.

Lorddrakul · 06-08-2019 3:23pm

What are the benefits of clean versus replacement?

DPF in the car is end of life, I'm told, and doesn't seem to respond to the re-gen procedure anymore.

Replacement is not exorbitant, but would do a clean if it is worthwhile.

087brain21 · 06-08-2019 3:46pm

right i dealt with these damh DPF for the past few years in my own cars (few different makes+models)

you need to be doing a handy amount of long same speed driving unfortunately in ireland the motorway seems to be the best place for this for the DPF to heat up and regen.

If your gone past this point wurth dpf cleaner is the best i find it sprays right into the filter under the car not poured into the fuel tank(these aren't great tbh)

if this dont work you need to get it professionally cleaned nearly back to brand new can be pricey and take a bit of time

There is talk of the NCT and DOE clamping on cars that cut the DPF out but places are still cutting them or gutting them out and remapping the ECU

CoBo55 · 06-08-2019 11:16pm

087brain21 wrote: »

right i dealt with these damh DPF for the past few years in my own cars (few different makes+models)

you need to be doing a handy amount of long same speed driving unfortunately in ireland the motorway seems to be the best place for this for the DPF to heat up and regen.

If your gone past this point wurth dpf cleaner is the best i find it sprays right into the filter under the car not poured into the fuel tank(these aren't great tbh)

if this dont work you need to get it professionally cleaned nearly back to brand new can be pricey and take a bit of time

There is talk of the NCT and DOE clamping on cars that cut the DPF out but places are still cutting them or gutting them out and remapping the ECU

Unless you like getting your bank card scorched from now until eternity take this option.

CoBo55 · 06-08-2019 11:19pm

Lewis_Benson wrote: »

Dont do this,
The DPF is there for a reason.

Is the DPF clogged?
If so, have you been able to initate a regeneration?

If you cant initiate a regen then you may need to bring it to a DPF cleaning company, there are a few about.

What kind of driving do you do on a daily basis, and how many miles are on the engine now?

Should last about a month... After that open wallet surgery starts:mad:

Lewis_Benson · 06-08-2019 11:21pm

CoBo55 wrote: »

Should last about a month... After that open wallet surgery starts:mad:

If you need to remove or gut a DPF then you shouldn't be driving a diesel engined car.

CoBo55 · 06-08-2019 11:32pm

Duckjob wrote: »

Pretty sure you're advising something that's illegal there.

Not to mention being highly harmful to peoples health.

Really? Illegal?
Throwing ones hard earned cash in the hope of curing the DPF is harmful to ones financial health:(
Been there, done that, got the bugger gutted and deleted as the money being spent was getting ridiculous, sailed through the NCT without a bother, mpg has improved by an average of 10 mpg. Best 400 smacks I ever spent, my only regret was that I didn't get it done the minute the warning light appeared.

CoBo55 · 06-08-2019 11:37pm

Lewis_Benson wrote: »

If you need to remove or gut a DPF then you shouldn't be driving a diesel engined car.

Why not? I don't fancy footing a petrol bill for 40,000km p.a, maybe if I started a go fund me page.. Will you donate?

Lewis_Benson · 07-08-2019 4:50am

CoBo55 wrote: »

Why not? I don't fancy footing a petrol bill for 40,000km p.a, maybe if I started a go fund me page.. Will you donate?

If your doing that kind of mileage, how is your DPF getting clogged up?

087brain21 · 07-08-2019 7:32am

Lewis_Benson wrote: »

If your doing that kind of mileage, how is your DPF getting clogged up?

it doesn't matter how many miles you do a year the car has to be driving at the same speed for the DPF to heat up to regen to clean itself
ie 80-120km/h for around 20-60 mins depending on the car
some cars the sec you slow down stop regening and you nearly have to start the whole process again

Lewis_Benson · 07-08-2019 8:40am

087brain21 wrote: »

it doesn't matter how many miles you do a year the car has to be driving at the same speed for the DPF to heat up to regen to clean itself
ie 80-120km/h for around 20-60 mins depending on the car
some cars the sec you slow down stop regening and you nearly have to start the whole process again

I understand how the system works.
It doesn't necessarily have to be constant driving at a given speed, though that does help.
My mondeo will regenerate at any time it sees fit, it has started active regeneration while driving in traffic.

What you describe is passive regeneration.
Most cars will start an active registration at a set interval if its required.

tossy · 07-08-2019 9:04am

CoBo55 wrote: »

Remove+delete... End of story, best few bob you'll ever spend.

It will be nullified by the multiples of that amount you’ll have to spend putting it back in to get through the nct.. eventually.

ronnie3585 wrote: »

Buy a petrol instead.

Just don’t buy one with a GPF

Duckjob · 07-08-2019 9:55am

CoBo55 wrote: »

Really? Illegal?
Throwing ones hard earned cash in the hope of curing the DPF is harmful to ones financial health:(
Been there, done that, got the bugger gutted and deleted as the money being spent was getting ridiculous, sailed through the NCT without a bother, mpg has improved by an average of 10 mpg. Best 400 smacks I ever spent, my only regret was that I didn't get it done the minute the warning light appeared.

Yep, f**k the environment and knowingly churning highly cancerous particulate out into the air that everyone around you has to breath, right ?

https://www.youtube.com/watch?v=E8AIh2qoSnM

CoBo55 · 07-08-2019 10:05am

Duckjob wrote: »

Yep, f**k the environment and knowingly churning highly cancerous particulate out into the air that everyone around you has to breath, right ?

https://www.youtube.com/watch?v=E8AIh2qoSnM

Yep!!

CoBo55 · 07-08-2019 10:11am

Lewis_Benson wrote: »

If your doing that kind of mileage, how is your DPF getting clogged up?

400,000 km.... Troubles started at 320,000, she's gone to dpf heaven now, just needed to get that extra time out of her, 1.6 Octavia, replaced with the same, grand aul workhorse Boris Johnson supplied...

CoBo55 · 07-08-2019 10:13am

tossy wrote: »

It will be nullified by the multiples of that amount you’ll have to spend putting it back in to get through the nct.. eventually.

Just don’t buy one with a GPF

Her NCT days are over, got two extra light free years out of her and sent to stud...

tossy · 07-08-2019 10:21am

CoBo55 wrote: »

Her NCT days are over, got two extra light free years out of her and sent to stud...

If de light is out 'sur' she's alrite.

pablo128 · 07-08-2019 10:26am

Duckjob wrote: »

Yep, f**k the environment and knowingly churning highly cancerous particulate out into the air that everyone around you has to breath, right ?

And what do you think happens during a re-gen?

cruizer101 · 07-08-2019 10:34am

pablo128 wrote: »

And what do you think happens during a re-gen?

During an active regen extra fuel is put into the engine to increase the exhaust temperature. This in turn raises the temperature in the DPF where the particulate matter is trapped, by raising the temperature it burns off those trapped particles turning the the microscopic particles into CO2, which whilst damaging to the environment in terms of global warming does not have any direct effect on humans as the particulate matter does.

CoBo55 · 07-08-2019 10:39am

tossy wrote: »

If de light is out 'sur' she's alrite.

It was!! Plenty of power (for a 1.6), better on juice, no limp mode which along with being inconvenient was downright dangerous. If the present incumbent starts kicking up I know what treatment she'll get...

CoBo55 · 07-08-2019 10:47am

cruizer101 wrote: »

During an active regen extra fuel is put into the engine to increase the exhaust temperature. This in turn raises the temperature in the DPF where the particulate matter is trapped, by raising the temperature it burns off those trapped particles turning the the microscopic particles into CO2, which whilst damaging to the environment in terms of global warming does not have any direct effect on humans as the particulate matter does.

Ha ha ha!! Are you serious? Microscopic particles are turned to CO2? That's a chemical reaction from star trek... A dpf produces ash when everything is working perfectly, nothing more nothing less. When things start getting old and slightly worn is when the tail chasing starts...

Duckjob · 07-08-2019 10:48am

NCT centres need to start checking this and reporting directly to Gardai + penalty points to stamp out this nonsense.

Clearly, once again, we as a nation are too self-centred and immature to be able to respect rules that are for the benefit of us all.

CoBo55 · 07-08-2019 10:57am

Duckjob wrote: »

NCT centres need to start checking this and reporting directly to Gardai + penalty points to stamp out this nonsense.

Clearly, once again, we as a nation are too selfish and immature to respect rules that are for the benefit of us all.

What rules? Keep throwing money at a car in the hope the problem will be solved? I replaced the egr valve 600, lasted about 3 weeks, left me stranded on the M4 in the UK, injectors replaced... CTS replaced, dpf removed and cleaned again, total spend had now exceeded 1200 at this stage, I said fcuk that for a game of soldiers, gut the bugger!! I'm outta here!

Marcusm · 07-08-2019 11:03am

CoBo55 wrote: »

Ha ha ha!! Are you serious? Microscopic particles are turned to CO2? That's a chemical reaction from star trek... A dpf produces ash when everything is working perfectly, nothing more nothing less. When things start getting old and slightly worn is when the tail chasing starts...

The particulates consist of soot and ash. Soot is unburned carbon and if removed through a regen then yes it becomes CO2! The ash mostly comes from lubricating oil rather than the diesel and is formed of (generally) incombustible metallic pieces. Non-mineral sytnthetic oils should, in theory, not have any metallic elements to generate ash.

Gregor Samsa · 07-08-2019 12:29pm

CoBo55 wrote: »

Ha ha ha!! Are you serious? Microscopic particles are turned to CO2? That's a chemical reaction from star trek...

What's so unusual, or indeed "star trek", about CO2 being produced as a result of combustion? The size of the particles being burned don't have a bearing on the chemical reaction or the resulting emissions. If you burn a lump of coal, you release CO2. If you turn the lump of coal into coal dust and burn it, you still release CO2. If you burn a single particle of coal dust, you release CO2. If you burn anything containing carbon in air, you release CO2. The soot trapped by the DPF contains carbon. The soot is burned off during DPF regeneration. The process releases CO2.

What do you think happens to the soot that gets burned off during a DPF regen? If it were all to turn to ash without any gaseous release, that would be a Star Trek chemical reaction!

07-08-2019 12:35pm

3k down later...
Decides to get it removed here in galway..was about 250euro..
Never looked back..
Get rid or be prepared for the biggest headache of your life.
We were doing the miles..still wasn't helping

087brain21 · 07-08-2019 12:44pm

Duckjob wrote: »

NCT centres need to start checking this and reporting directly to Gardai + penalty points to stamp out this nonsense.

Clearly, once again, we as a nation are too self-centred and immature to be able to respect rules that are for the benefit of us all.

Its this nanny state thinking is why the NCT slap a sticker on your front window saying your car is unsafe to drive and they will call the Gardai if seen driving for failing a NCT with a small bit of uneven wear on a tyre
Hardly unroadworthy

zilog_jones · 07-08-2019 1:49pm

CoBo55 wrote: »

Why not? I don't fancy footing a petrol bill for 40,000km p.a, maybe if I started a go fund me page.. Will you donate?

There are petrol hybrids that will match or surpass your Octavia in fuel consumption, not to mention deliver more power.

Also: Did you declare your modifications to your insurer?

:):)

Spook_ie · 07-08-2019 2:41pm

087brain21 wrote: »

it doesn't matter how many miles you do a year the car has to be driving at the same speed for the DPF to heat up to regen to clean itself
ie 80-120km/h for around 20-60 mins depending on the car
some cars the sec you slow down stop regening and you nearly have to start the whole process again

Complete twaddle, VAGs regenerate at any speed, even idling, the problems start when people don't allow a regen to complete.

creedp · 07-08-2019 3:16pm

087brain21 wrote: »

Its this nanny state thinking is why the NCT slap a sticker on your front window saying your car is unsafe to drive and they will call the Gardai if seen driving for failing a NCT with a small bit of uneven wear on a tyre
Hardly unroadworthy

Just drive a vintage car and only you will have to worry about its road worthiness - always seems a bit ambiguous to me

Duckjob · 07-08-2019 5:33pm

087brain21 wrote: »

Its this nanny state thinking is why the NCT slap a sticker on your front window saying your car is unsafe to drive and they will call the Gardai if seen driving for failing a NCT with a small bit of uneven wear on a tyre
Hardly unroadworthy

Not wanting selfish morons giving my kids cancer while they breath is nanny state thinking now ?

Wow.

087brain21 · 07-08-2019 5:50pm

Duckjob wrote: »

Not wanting selfish morons giving my kids cancer while they breath is nanny state thinking now ?

Wow.

i suggest getting a mask like they wear in china and japan if you care that much because i don't see people changing their ways anytime soon

pablo128 · 07-08-2019 5:53pm

Duckjob wrote: »

Not wanting selfish morons giving my kids cancer while they breath is nanny state thinking now ?

Wow.

My auld 05 diesel car doesn't have a dpf.

I'm going to hell, aren't I?

087brain21 · 07-08-2019 5:55pm

pablo128 wrote: »

My auld 05 diesel car doesn't have a dpf.

I'm going to hell, aren't I?

a lot of the older diesels dont have them sure i still drive a 98 diesel starlet that doesn't even get emissions tested at nct

Duckjob · 07-08-2019 6:47pm

087brain21 wrote: »

i suggest getting a mask like they wear in china and japan if you care that much because i don't see people changing their ways anytime soon

Or we could, y'know, as a society hold selfish morons to account not to be selfish morons instead of being one of them.

pablo128 · 07-08-2019 7:01pm

Apologies for off topic posts.

A friend of mine regularly jet washes dpfs for lads. He leaves them steeping overnight in a strong tfr solution and jets them out the next day. He says not to get too close so as not to damage the inside. And the vast majority are working perfectly afterwards.

meathstevie · 07-08-2019 7:47pm

Duckjob wrote: »

NCT centres need to start checking this and reporting directly to Gardai + penalty points to stamp out this nonsense.

Clearly, once again, we as a nation are too self-centred and immature to be able to respect rules that are for the benefit of us all.

Is it really as black and white as you make it out to be ? Everyone I know who has had a DPF removed reports substantially better fuel economy which means you emit less of whatever your car emits per km driven.

meathstevie · 07-08-2019 7:50pm

Spook_ie wrote: »

Complete twaddle, VAGs regenerate at any speed, even idling, the problems start when people don't allow a regen to complete.

Diesels have never been any good for short slow journeys that don't allow the engine to warm through, not fifty years ago and not now either.

grogi · 07-08-2019 8:02pm

If DPF gets clogged, it usually means one thing: too much fuel in relation to air.

This is caused by either a leak in the intake tract after air flow sensor - engine gets less air that it think is getting - or injector that is simply too generous - engine get more fuel that it should.

Fix the underlying issue, clean the DPF and happily ever after.

Anjobe · 07-08-2019 8:46pm

meathstevie wrote: »

Is it really as black and white as you make it out to be ? Everyone I know who has had a DPF removed reports substantially better fuel economy which means you emit less of whatever your car emits per km driven.

DPF can take out up to 99% of the carcinogenic particulate matter from diesel exhaust emissions, so no improvement in fuel economy will make up for the massive increase in harmful emissions that removing a DPF will result in.

grogi · 07-08-2019 9:35pm

087brain21 wrote: »

a lot of the older diesels dont have them sure i still drive a 98 diesel starlet that doesn't even get emissions tested at nct

Fortunately cars without DPF get rarer and rarer these days...

creedp · 07-08-2019 11:16pm

grogi wrote: »

Fortunately cars without DPF get rarer and rarer these days...

My 08 s-max doesn't have one which surprised me

grogi · 07-08-2019 11:50pm

meathstevie wrote: »

Is it really as black and white as you make it out to be ? Everyone I know who has had a DPF removed reports substantially better fuel economy which means you emit less of whatever your car emits per km driven.

Nonsense. You might burn less or burn clean.

mikeecho · 08-08-2019 12:34am

The best DPF cleaner is high quality diesel fuel, and regular long journeys.

Weekly Italian tune ups , won't do any harm either.

deandean · 08-08-2019 10:09am

Back to the OP's query: are DPF cleaning additives any good?
My 1.6hdi started giving 'DPF clogged' warnings at about 260k km.
I tried Italian tune-ups. I tried a couple of those DPF cleaner additives. I tried a heavy dose of Dipetane. None of these had any real effect. Ergo I regard the DPF additives, as 'useless'.
I got the DPF replaced with a new, OEM part. The cost of these has dropped; it cost me about €500 installed.
I'm at 300k km now and all is well.
I wouldn't advocate removal of the DPF for reasons others have posted.
Behind some cars (many of them taxis) you see the big belch of smoke under acceleration and it's obvious that their DPF has been removed.

pablo128 · 08-08-2019 10:40am

deandean wrote: »

Back to the OP's query: are DPF cleaning additives any good?
My 1.6hdi started giving 'DPF clogged' warnings at about 260k km.
I tried Italian tune-ups. I tried a couple of those DPF cleaner additives. I tried a heavy dose of Dipetane. None of these had any real effect. Ergo I regard the DPF additives, as 'useless'.
I got the DPF replaced with a new, OEM part. The cost of these has dropped; it cost me about €500 installed.
I'm at 300k km now and all is well.
I wouldn't advocate removal of the DPF for reasons others have posted.
Behind some cars (many of them taxis) you see the big belch of smoke under acceleration and it's obvious that their DPF has been removed.

If you really cared about the environment you wouldn't be driving a diesel in the first place.

grogi · 08-08-2019 10:59am

pablo128 wrote: »

If you really cared about the environment you wouldn't be driving a diesel in the first place.

That's not the point, isn't it?

Best DPF cleaner?

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