How do you keep a DPF filter clean

[Brizzle]

Got my new A4, love it 

I’ve been used to petrol cars until now, thought I’d treat myself now I can to this Audi, but my first diesel and you hear so many story’s about blocked filters 

Is there a way to keep them clean, I understand it may just be a case of making sure the car gets a good run once a week, is this the case?

[Stagn8]

Absolutely, the DPF can only regenerate if the engine has sufficient temperature for the burn to take place, this normally means 20 - 30 mins of high speed motorway running. It’s short journeys that block the DPF and cause problems so avoid too many. When I had a diesel any short journeys were done in the wife’s Suzuki.

The regen can start at any time and there is sometimes a clue such as a sudden increase in fuel consumption as it squirts neat diesel to burn of the residue, or a funny smell or higher tick over. Not had a VAG diesel so these are generalisations rather than specifics. If you stop the car mid gen, then invariably the fans will continuously run cooling everything down, happened twice on my Mitsubishi. If you get the blocked DPF light then give it a long motorway run in a lowish gear to keep the revs up which will hopefully clear it. Your dealer can start a regen for you but obviously will charge you a considerable amount of money for the pleasure!
 

Best advice is to pile on the miles, which is what diesels do best.

[Stevey Y]

2 hours ago, Brizzle said:

Got my new A4, love it 

I’ve been used to petrol cars until now, thought I’d treat myself now I can to this Audi, but my first diesel and you hear so many story’s about blocked filters 

Is there a way to keep them clean, I understand it may just be a case of making sure the car gets a good run once a week, is this the case?

Hi Keith is correct, but you can help it all by using a good quality fuel additive take a look on the Hydra fuel additives site, I do a lot of short journeys [Cab] I use the Maximus additive as I find it ups the Cetane rating enough for the car to kick off a regen as soon as I do any run over three miles.

Steve.

[Stagn8]

Good to know Steve. 

[Stevey Y]

2 minutes ago, Stagn8 said:

Good to know Steve. 

Hi the extra 4-6 mpg is selling point with Hydra and on a run is where it really scores, back in June I did from where I live to St Ives in Cornwall , 750 miles round trip on £72.00 worth of diesel.

Steve.

[Brizzle]

Cheers lads 

So this stuff, is it just a simple case of putting it into your tank then filling up with deisel ?

[Stevey Y]

17 hours ago, Brizzle said:

Cheers lads 

So this stuff, is it just a simple case of putting it into your tank then filling up with deisel ?

Hi it is indeed just make sure you follow the instructions on the bottle.

Steve.