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  Are fuel additives worth it? 11 Jul 2023 (Ask HJ)
  Do you recommend any diesel additives? My 2011 Nissan X-Trail 2.0l dCi has done 115,000 miles and is serviced every year but the mpg seems to be getting...
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  Hyundai ix35 fuel filter issues in cold weather - is this right? 12 Jan 2015 (Ask HJ)
  I have recently had a problem with my Hyundai ix35 (12 reg/25,000 miles) regarding the fuel filter clogging up in cold weather. The car came to a halt...
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  How can I refill a modern car with fuel can? 13 Jun 2014 (Ask HJ)
  I have always carried a reserve supply five-litre can of diesel on journeys in the remoter parts of the Scottish Highlands and Islands where there are...
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  Diesel engine fuel flush - was it necessary? 14 Feb 2012 (Ask HJ)
  My wife's Clio Extreme dCi 86 had its first MOT today, and the garage, without our authority, carried out a fuel flush on it, charging us £20. This they...
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  No fuel like an old fuel 31 Jul 2010 (Ask HJ)
  Several weeks ago, I accidentally put 20 litres of unleaded into my 9 year old, 93,000 mile 1.9D Renault Kangoo. I immediately filled the rest of the tank...
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  Which premium diesel fuel do you recommend? 12 Aug 2012 (Ask HJ)
  I'm a bit confused as to which is currently the best fuel to use in my Volkswagen group 2.0 TDI CR engine. Could you please confirm which is now the best...
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  Save and sound? 8 Aug 2009 (Ask HJ)
  My wife may soon purchase a Focus or Golf and we are wondering whether to go for diesel or petrol. The annual mileage will be about 10,000, mainly on rural...
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  Can you answer my technical questions on diesel engines? 20 Apr 2013 (Ask HJ)
  I have a few queries on diesel cars that I would be grateful for your advice on. 1. With regards to the diesel particulate burning cycle, what is the effect...
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  Fuel pump failure with ultra-low-sulfur diesel 30 Jun 2013 (Ask HJ)
  My distributor type fuel pump on my Renault Kangoo van has failed at 98,000 miles. The fault has been put down to ultra-low-sulfur diesel - apparently...
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  Diesel additives 6 May 2011 (Ask HJ)
  Today's diesel fuel is low sulphur - an EU requirement for polution control - but sulphur helps lubricate the fuel system. I have been told that by adding...
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  I made a stupid mistake and put the wrong fuel in my car. What should I do? 9 May 2021 (Ask HJ)
  I filled my diesel Nissan Qashqai with petrol. What’s the best course of action?
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  Mazda 6 diesel fuel consumption 23 Mar 2011 (Ask HJ)
  My husband purchased a new Mazda 6 estate in November 2010. He previously owned a Honda Accord. Since buying it he has constantly complained of poor...
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  Purchasing diesel abroad 31 Aug 2011 (Ask HJ)
  Using premium fuel (Shell V-Power) seems to be the only way to avoid particle filter problems with AUDI A3 in the UK. What grade Diesel do I need to...
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  What's the best quality petrol and diesel to use? 2 Aug 2018 (Ask HJ)
  What is the best premium fuel brand for petrol and diesel?
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  Should I buy a bi-fuel car? 10 Jan 2024 (Ask HJ)
  I'm wondering if it would be worth my while buying a new Bi Fuel vehicle. I have a LPG garage 3 miles from me, but will it still be there considering the...
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  What damage can misfuelling do? 25 Mar 2022 (Ask HJ)
  My son has a 5 year old diesel car and told me that he had a half tank full (about 28 litres) of premium diesel in it and then went to top up to full but...
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  How much profit are fuel retailers making at the moment? 15 Mar 2022 (Ask HJ)
  What is the profit per litre of petrol and diesel at today's prices on the forecourt?
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  Poor fuel economy in my Ford Fusion diesel 1.4 . What's the cause? 6 Jun 2012 (Ask HJ)
  I have recently bought a Ford Fusion Diesel 1.4. It's one owner with 46,000 miles. I am only getting 43mpg on a combination of motorway and commuting journeys....
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  Is it worth using a diesel additive in my Volkswagen Passat? 6 Sep 2012 (Ask HJ)
  I drive a 2007 Volkswagen Passat 2.0TDi 140 SE saloon. Could you please advise me if using Millers Diesel Power ECO MAX fuel additive is worth the expense?...
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  Bio beware 4 Sep 2011 (Ask HJ)
  I recently read a small article concerning fears associated with new legislation from the EU and subsequently the UK, on increased use of biofuel content...