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  Sulph-righteous 3 Jan 2009 (Ask HJ)
  I recently purchased a newish brand of diesel fuel here in France. It stated on the pump that it was sulphur-free. The price was a few centimes more expensive...
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  Cantankerous 10 Jan 2009 (Ask HJ)
  I have a new S3 on its second tank full of fuel. Driving on the A1 with almost a quarter tank on the gauge and 65 miles left on the fuel range & no low...
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  Dervliverance 31 Jan 2009 (Ask HJ)
  My husband and I are taking delivery of a new BMW 520d SE auto in January. We've never run a diesel before and are absolutely thrilled at the prospect...
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  Flap jacks it 7 Feb 2009 (Ask HJ)
  I have a 2003/53 BMW530d SE E60 auto that has 101k on the clock and full service history (BMW up to 60k then synthetic oil every 10k after that.). The...
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  Saving pence, spending pounds 21 Feb 2009 (Ask HJ)
  My wife took her 2002 RAV-4 for a service, which was uneventful. However, a few days later the engine management light came on, so back it went. The service...
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  Academic question 21 Feb 2009 (Ask HJ)
  I am an indecisive academic requiring help. In 1994 after months of deliberation and investigation, I bought a brand new VW Passat Diesel Estate and declared...
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  Something nissing 7 Mar 2009 (Ask HJ)
  I own a 2004/54 Nissan Micra, which has done 13,500 miles and was chosen as a retirement car. I thought being English/Japanese it would be reliable, but...
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  Jazz blues 7 Mar 2009 (Ask HJ)
  In terms of fault occurrence, my Jazz is the most unreliable car I have ever owned. After a few hundred miles, the fuel consumption worsens by 10mpg or...
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  Win diesel 7 Mar 2009 (Ask HJ)
  You state that in lower temperatures diesels use more fuel. What is the thermodynamic basis for this statement? I find it difficult to figure out why...
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  ….with the truth 11 Apr 2009 (Ask HJ)
  Seeing you refer to the Hyundai i20 returning "more than 50mpg" I wondered if it has the same 1,248cc engine as our recently purchased i10. Our only disappointment...
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  Velocirapid 30 May 2009 (Ask HJ)
  I tried Shell V-Power to see if it made any difference to mpg, largely because of your newspaper column. I drove back to the UK from Frankfurt in my 1998...
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  Not getting through 20 Jun 2009 (Ask HJ)
  I have followed your suggestions on using Shell V Power fuel, high revs, and petrol cleaners (3 times). However I am still having problems as the engine...
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  Top gear 1 Aug 2009 (Ask HJ)
  I am looking to buy a second-hand car for my daily commute to work, which is around 60 miles per day of almost all motorway and A road driving. I have...
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  Chariot of ire 8 Aug 2009 (Ask HJ)
  I recently bought a Y reg BMW Z3 with 3 months warranty from a dealer in Nottingham. (I live in Huntingdon.) I filled up with Shell petrol last week and...
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  Storm in a petrol tank 19 Sep 2009 (Ask HJ)
  I filled up with 42 litres of Shell V-Power last Wednesday afternoon. The car initially continued to run well but by Thursday evening, after about 45 miles,...
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  Dies sulk 26 Sep 2009 (Ask HJ)
  My 1.8 TDCi Mondeo (fuelled with Shell V Power diesel) is only returning an average fuel economy of 41mpg. The car has done just over 1,000 miles. Is this...
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  Separate featurette: 3 Oct 2009 (Ask HJ)
  On July 25 2009, you answered a letter by P.M. of Kineton who had received a "penalty" for overstaying while parking to eat at McDonalds. You advised the...
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  Doesn’t figure 24 Oct 2009 (Ask HJ)
  Just over a month ago I bought a March 2009 Mazda3 1.6 Sport. Under the technical details of the car the Combined fuel consumption is 40.9mpg (Urban 31.7...
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  Confusion transfusion 31 Oct 2009 (Ask HJ)
  I thought I would try Shell V-Power diesel. At a Shell Garage I saw a logo in red with a V-Power sign on it and filled up from the pump showing the red...
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  Double charged 31 Oct 2009 (Ask HJ)
  I have a VW 1.4 Twincharger, 2 years old, which has developed a frequent slight hesitation at about 3,500 rpm when accelerating; this may be as it switches...