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  Is the Anti-skid service warning light on my Volvo S40 due to an EGR valve fault? 27 Jan 2017 (Ask HJ)
  My Volvo S40 had a new DPF in 2014 and in December 2016 it needed a new ADM, EGR valve, and DPF cleaning. The engine system service costed £1250 and now...
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  How do I carry out a DPF regeneration on an automatic? 4 Oct 2023 (Ask HJ)
  I have an 8-speed automatic Ford Transit Connect. A NOX sensor recently failed and resulted in diesel finding its way into the oil because a regeneration...
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  Mazda 6 diesel - keep or sell? 26 Aug 2016 (Ask HJ)
  You have answered a couple of questions for me before, regarding the Mazda 6. I use one for business and cover 20,000 miles a year. I have heard of oil...
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  S Max - Petrol or Diesel? 20 May 2015 (Ask HJ)
  I'm thinking about getting an S Max as a family car but Petrol models appear to be thin on the ground. I'm apprehensive about getting a diesel as most...
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  What sort of journey is sufficient to allow the DPF to clear in a diesel BMW 3 Series? 8 Jun 2013 (Ask HJ)
  I was interested to read the question titled "Agriculture club" that concluded "you bought completely the wrong engine for your type of use". I'm currently...
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  Zafira vs Touran - which should I choose? 23 Nov 2011 (Ask HJ)
  An enlarging tribe of grandchildren means I need to change my 3yr old 2-litre diesel Vauxhall Antara for a seven-seater. I have good offers on new...
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  Diesel or petrol? 17 Mar 2011 (Ask HJ)
  I am trying to go 'eco.' Better for the enviroment and better for my wallet. I currently drive a 2.0litre Hyundai Coupe which is far from green and loves...
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  Should I have the oil changed in my Volvo V70 following the DPF recall related to oil contamination by fuel? 3 Jun 2010 (Ask HJ)
  You probably know that Volvo have issued a safety recall related to rising sump oil levels in their D5 Diesel engines with a DPF, which is caused by excess...
• Vauxhall Corsa D - Bought a dodgy car, its been 26 days... 17 Nov 2015 (Forum)
  : ·          DPF Filter missing – You told me when having problems with the DPF to run it down the motorway. I did over 300 miles in this car and even used Forbes DPF cleaner. I even had the cars DPF forcefully regenerated to try and resolve this issue. Only after having taking it to a diesel
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  Issues with Fiat 500 Diesel 29 May 2013 (Ask HJ)
  I have a Fiat 500 Diesel car, which is currently having white smoke coming from the exhaust. It is also over revving and the DPF warning light has come...
• Mazda 5 - Mazda 5 DPF light reset success! 14 Apr 2013 (Forum)
  .   There is a youtube video of what I followed but its none English under resteo DPF mazda5
• Audi a6 2014 3.0l diesel 204 PS with 60k - Failed dpf regen forcing diesel into oil? 2 Jun 2019 (Forum)
  .  I do short runs in the week and every weekend will drive it for at least 1 hours there and back.  Have just driven 600 to wales and back and had the dpf warning light on not long after this.        So the service manager told me if I didn’t
• Any - DPFwhat is it about them 3 Mar 2019 (Forum)
  Hi all this is my first post post and help someone can answer this question regarding DPF's. I see a lot of online advice that DPF's need to be activated (regenerated) at least once a week to stop them getting blocked, and this can be done by going at 50-60 mph for 10 minutes on a dual
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  What is your advice on buying a 2013 Citroen Dispatch Combi? 17 Aug 2017 (Ask HJ)
  Do you have any advice on buying a 2013 Citroen Dispatch Combi? It's done 45,000 miles. Are they expensive to repair?
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  Which diesel car should I buy? 14 Aug 2016 (Ask HJ)
  What would be the best car that meets the following criteria? - has a Diesel engine with lots of torque - can return at least 45mpg on the motorway -...
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  Selling a diesel 4 Jan 2016 (Ask HJ)
  I currently drive a BMW 330d E90 LCI model. It's done 86k and am now beginning to wonder how long the DPF will hold up. It's run exclusively on Shell V...
• Audi A3 2008 1.9TDI - 87k Miles - Car Won't Start - Clicking as it tries to fire? 10 Aug 2015 (Forum)
  Hi All,    I think this may be DPF related, but I'd like any other advice.    Our A3 Diesel has done 87k and has been fully serviced at all correct intervals. Every now and again the DPF light comes on and I take it out for the obligatory hammer
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  Buying used - Civic or BMW 318d? 14 Jan 2014 (Ask HJ)
  I need to change my car and have a choice between a 2010 Honda Civic 2.2 I-ctdi se (95,400 miles) or a 2009 BMW 318d with 114,300 miles. I understand...
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  Why is the Nissan Qashqai diesel suitable for shorter journeys? 28 Dec 2013 (Ask HJ)
  I was interested to see that you think the Qashqai 1.6DCI would be suitable for an annual mileage of 8500 with only two 20 minute regular journeys per...
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  Mazda Timing Belt Issues 22 May 2013 (Ask HJ)
  I have recently purchased a Mazda 6 2.2 TS2 Diesel. With Full service history. The DPF light has come on at 65,000 - The dealership has adviced this it...