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  Where is the DPF warning light on the Jaguar XF? 24 Mar 2015 (Ask HJ)
  Where is the DPF warning light located on the dashboard of the Jaguar XF 2.7 diesel (2008 model)?
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  Ford Galaxy - which models have a DPF? 30 Mar 2014 (Ask HJ)
  I would like to purchase a Ford Galaxy diesel. Can you tell me which models don't have DPFs and does the Galaxy switch from torque converter to DMF at...
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  Buying a new SUV 16 Jan 2013 (Ask HJ)
  I would like to buy a nearly new Kia Sorrento or Hyundai Santa Fe automatic - I do about 11,000 miles a year, with some regular 150 mile runs. However...
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  Does the CR-V have a DPF? 3 Mar 2012 (Ask HJ)
  I'm considering buying a large car possibly a 2007 / 2008 new shape Honda CRV i-CTDI. One company owned from auction with 100k+ on clock. I am concerned...
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  My diesel is doing getting a low fuel economy, should I add an additive? 16 Jun 2020 (Ask HJ)
  I just got a diesel 2018 Honda Civic with just 4500 miles on it. I'm only getting 39mpg. Should I put a fuel additive in?
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  Can I clean my blocked DPF with Mr Muscle oven cleaner? 17 Oct 2017 (Ask HJ)
  Is it okay to clean the DPF filter with Mr Muscle oven cleaner and then put it back? It’s a lot cheaper than replacing it but does it do the job? I have...
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  Does the Mini have any DPF issues? 22 Sep 2013 (Ask HJ)
  My wife has bought a 2012 Mini Countryman with a diesel engine. She does about 3000 miles a year on local trips; what problems can she anticipate with...
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  Can I expect DPF and dual mass flywheel problems on my Subaru Outback? 13 Oct 2012 (Ask HJ)
  I have a 2010 Subaru Outback Boxer diesel which has covered 23,000 miles. I had planned to keep it for a further two years but due to the possibility of...
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  How can I tell when the DPF is regenerating? 4 Jan 2022 (Ask HJ)
  Is it possible to purchase anything that lets you know when your diesel particulate filter (DPF) is regenerating e.g. something simple like a bulb lighting...
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  DPF light keeps coming on after the emissions fix - did they do a botch job? 11 Aug 2017 (Ask HJ)
  I'm having problems with my DPF light coming on after the emissions fix. Is this a typical occurrence with the SEAT Toledo 1.6 TDi? What do they do to...
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  DPF Problem 2 Aug 2015 (Ask HJ)
  The DPF warning light appeared on the dash for the first time with no other issues at all with car. I checked with my handbook for advice which l followed...
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  Does the Land Rover Freelander 2 suffer from DPF problems? 18 Mar 2014 (Ask HJ)
  My father is about to change his Land Rover Freelander 2 for a new car and has offered me his old car. I am very tempted by this kind offer as it will...
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  How should I ensure I don't have any DPF problems with a KIA Cee'd diesel? 7 Dec 2013 (Ask HJ)
  I am thinking of buying a 2012 KIA Cee'd 1, 1.6 diesel manual. My mileage is approx 8000 - 10,000 miles per year, roughly 50/50 short journeys and motorway....
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  Will the DPF on our new Qashqai develop problems following 20 minute trips? 19 Oct 2013 (Ask HJ)
  Despite planning to buy a new petrol car because of our average annual mileage of 8500, we have chosen the Nissan Qashqai 360 1.6 dCi 130PS + with 'stop-start'...
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  What DPF servicing is needed? 16 Feb 2013 (Ask HJ)
  My Focus 1.6TDCI 110 will be coming up to 75,000 miles in a few months. I understand that replacement of the DPF is reccomended by the manufacturer at...
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  DPF - should I change to petrol? 19 Apr 2011 (Ask HJ)
  My 2.0-litre TDI 170 6sp A4 has been perfect so far whilst commuting 20 miles each way. Now at three and a half years old and 41,000 miles my new commute...
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  Smokeless moans 1 May 2010 (Ask HJ)
  As a pensioner I have understood diesels to be less efficient than petrol on short journeys as they take awhile to warm up. Can you explain what EGR and...
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  Our BMW 1 Series is showing a DPF light - is this because we only use it for short journeys? 20 Oct 2017 (Ask HJ)
  I recently bought my son a BMW 1 Series for his 18th birthday. Soon after the filter light came on. We took it to a garage to be looked at and the turbo...
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  How do I know when the DPF on my car is regenerating? 3 Sep 2018 (Ask HJ)
  I read a lot about diesel DPFs but how do I know when the fuel system is regenerating? I drive a Toyota RAV4 2.2-litre diesel. Nothing comes alight on...
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  Does my car have a DPF fitted? 4 Jul 2013 (Ask HJ)
  Can you tell me if the Toyota Avensis T27 2.2 D-4D has a diesel particulate filter?