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  Which is the best diesel fuel brand? 7 Nov 2012 (Ask HJ)
  What is the best diesel fuel brand for a Ford Focus 1.6 diesel LX 2007?
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  What's the best diesel fuel? 12 Dec 2013 (Ask HJ)
  With all the trouble that is being reported with diesel waxing up this year - what diesel do you recommend?
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  Is the diesel fuel that I buy in a supermarket any different from Shell or BP? 10 Sep 2018 (Ask HJ)
  Is the diesel fuel that I can buy in a supermarket filling station really any different that the diesel that I can buy from a Shell or BP garage?
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  I put a small amount of petrol in a full tank of diesel - will it be okay to drive? 13 Mar 2020 (Ask HJ)
  Will my diesel-engined car be okay with a small amount of petrol in a full tank of diesel?
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  Fuel ejection pump 26 Dec 2009 (Ask HJ)
  I've been reading about inadvertent fuel contamination (putting petrol in your diesel tank or vice versa). The AA’s website link to "Fuel Assist" (their...
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  Where is the diesel fuel filter located on my 59-plate Saab 9-3? 3 Jul 2010 (Ask HJ)
  Where is the diesel fuel filter located on my 59-plate Saab 9-3?
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  Shell diesel fuel pricing 1 Mar 2012 (Ask HJ)
  I follow your advice in the Telegraph to avoid buying supermarket fuels and buy Shell as you recommend because of the ad alwaysditives therein. However,...
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  Fuel, if you think it’s over 21 Jan 2010 (Ask HJ)
  Which is worse: petrol in a diesel car or diesel in a petrol car and why?
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  How can I remove water from my diesel car's fuel tank? 15 Jan 2023 (Ask HJ)
  There seem to be a bunch of claims out there about the best ways to get the water out of my diesel fuel tank. Can you recommend any?
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  Is running on low fuel bad for your car? 21 Sep 2016 (Ask HJ)
  I have read in a number of places that is a bad idea to run a diesel car on low fuel. Apparently you should never let it go below 1/4 of a tank. Is this...
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  'Super' diesel fuels - any advice on them? 11 Nov 2012 (Ask HJ)
  Is there much to choose between premium diesel fuels such as Shell V-Power, Total Excellium, BP Ultimate and Esso Supreme?
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  Buying branded diesel worthwhile? 3 Mar 2012 (Ask HJ)
  I have recently experienced a blocked fuel filter on my 1 year old Isuzu Rodeo with only 10,000 miles on the clock. The garage / mechanic from the...
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  Fuel leak problem with Nissan X-Trail 17 Jun 2013 (Ask HJ)
  I have noticed diesel fuel leaking from my Nissan X-Trail. I've jacked the car up and it looks like the leak is coming from an overflow pipe on the diesel...
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  Fuel additives 15 Oct 2011 (Ask HJ)
  I have started filling my 2007 diesel Passat Estate (2.0 140ps) with Total Excellium - currently on my third fill, and have noticed a bit better pickup...
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  We put petrol in our diesel car and drove home before it made an awful noise. What should we do? 25 Jun 2021 (Ask HJ)
  Our diesel Hyundai Sante Fe has been filled with petrol and driven three miles home. A dreadful noise occurred and then realisation set in. What can be...
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  Should I use premium diesel for a Volvo V60? 18 Aug 2022 (Ask HJ)
  I have a 2017 Volvo V60 D3 2.0-litre diesel. I am just wondering (given this is not a performance car) if there is any point paying the 10 per cent-plus...
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  Audi diesel fuel contamination - what should I do? 6 Oct 2013 (Ask HJ)
  My Audi A3 1.6 TDI has been off the road for two weeks, pending an investigation into a breakdown where injector failure was cited as the reason. The dealer...
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  DERV hurt 9 Oct 2011 (Ask HJ)
  I have recently purchased my first diesel car and have been informed that I should put the expensive diesel in from time to time as it is a cleaner fuel...
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  Should I use diesel fuel that has been stored for four years? 24 Dec 2010 (Ask HJ)
  I always keep a couple of gallons of diesel as a stand by, but have not used it for about four years. Can I use it now or is there a limited time before...
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  Is this a legitimate way to buy cheap diesel? 3 Apr 2011 (Ask HJ)
  I think I have discovered a legal way to buy cheap diesel fuel. My work colleague buys diesel from a truck breakers yard in Surrey and gets it for about...