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  Should I get a petrol or diesel engine for driving long distances? 11 May 2017 (Ask HJ)
  What is the best petrol engine concerning resale value and longevity? I'm looking to get something used, about the size of the Skoda Yeti. I'll be driving...
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  Why can it take days to notice that a vehicle has been filled with the wrong fuel? 17 Mar 2012 (Ask HJ)
  With reference to DS Wellesbourne wondering why it took five days for misfuelling a diesel to manifest itself, it would be because of the petrol being...
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  Is the 1.6-litre Ford Focus turbo petrol a solution to the DPF and DMF problems of diesel cars? 18 Feb 2012 (Ask HJ)
  Your warnings on the failure costs of turbos, DMFs and DPFs mean that the very features that reduce fuel usage and emissions raise the risks of high repair...
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  Someday smut 25 Jan 2010 (Ask HJ)
  I thought you might be interested to hear about my DPF experience. I drive a 2010 VW Golf 2.0 TDI GT, which I love. The mileage to date is less than 3,000....
• Citroen C Crosser 2.2HDi - Diesel additives? which one and how often 3 May 2015 (Forum)
  Now planning to fill up with Shell or BP, not supermarket grade, and driving 250 miles on Wednesday.  Would one of the small bottles of diesel additives in the tank make sense at this stage?  to clean out any further risks?  Note... the car has driven fine all week since on the same Tesco fuel.  Have had the car 3 years and run it so far on various different brands of "stock" diesel.
• Mondeo diesel starting - or not... 24 Feb 2003 (Forum)
  This all became apparent last winter but 'cured' itself until approx a week ago. Performance is pretty good for a diesel with over 160,000 miles and averaging 50 mpg so I would discount fuel starvation or air in the system; doesn't hesitate, pulls well enough, air filter is 3 months old. I do use Safeway fuel but have, for the last 2 months, been using Millers Diesel Power Plus (no significant obvious gains or losses there).
• most economical speed for a diesel van 20 Jun 2006 (Forum)
  Hi I have a Ford connect, T220, Diesel, and do 120miles a day....mostly on motorways...I was wondering what is the most economical speed I should try and maintain , to save on fuel. Thank you
• BMW 320D Tourer E46 Diesel 2002 reg - Crank but no start. 14 Jul 2021 (Forum)
  I then replaced the fuel filter under the car (passenger side), and still no start, but did notice that now the diesel fuel pump next to it is always priming every time you attempt to start the car, so replaced that and still no start but still constantly priming.
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  Why does my biodiesel Citroen Xantia stall first thing in the morning? 9 Sep 2010 (Ask HJ)
  I am using a glow plug style vegetable oil pre-heater unit on a Citroen Xantia with a Bosch pump. My fuel mix is 80 per cent new vegetable oil and 20 per...
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  Using premium fuel in my Volkswagen Passat has improved fuel economy and burns more cleanly. 10 Jun 2010 (Ask HJ)
  For a while I had been sceptical about the benefits of using higher quality fuel opposed to cheaper supermarket grades. Now that I have been using Shell...
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  Petrol in a diesel van - what should we do? 15 Jan 2014 (Ask HJ)
  My son in-law put 1/4 of a tank of unleaded petrol in his Fiat diesel van before realising he had made an error and then filled up with the correct diesel...
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  Diesel or petrol? 21 Jan 2010 (Ask HJ)
  I would appreciate some advice regarding the annual running costs of diesel versus petrol. We have been running two diesel cars. My Audi A4 is 08 registered...
• Supermarket Fuel 20 May 2023 (Forum)
    Bit late but the truth is there The fact that the stuff is sold in litres and not gallons is the biggest con Supermarkets and fuel retailers pushing diesel and petrol prices higher than needed, competition watchdog finds (msn.com)
• Fuel theft 15 Sep 2008 (Forum)
  As we all know too well, cost at the pumps rose dramatically this year. We heard of major thefts of diesel from farms, but was there an accompanying rash of siphoning etc. as in the early 70s, which provoked car makers to introduce locking fuel caps and other devices? (I don't seem to remember those on cars before that?)
• You can't turn a pig's ear into a silk purse. 16 Jan 2010 (Forum)
  The familiar old anti-diseasal rant. I'm utterly convinced that over the life of a car a modern diesels cost much more than their petrol engined cousins to run. Yeah sure there are some cracking diesels out there, I know. If you're a high mileage company car driver who'll get a car for 2 or 3 years, blast it up and down motorways and then throw them away, the only concern is diesel biased BIK and fuel costs (if you have to pay them.) again diesels win that argument.
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  Is swapping from petrol to diesel a good move? 25 Aug 2022 (Ask HJ)
  I am on the cusp of trading in a 2016 TSI VolkswagenTiguan (Mk2) for a 2018 TDI Volkswagen Touareg (Mk3). Putting the cash differential to one side (the...
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  Wanted - Diesel car for 90 mile commute 5 Nov 2012 (Ask HJ)
  My daughter commutes 90 miles a day mostly on motorways. She currently has a 2007 Ford Fiesta 1.4DCI, and gets about 60mpg. She likes the Fiesta and the...
• 15p Litre Biodiesel Made from Cats 13 Aug 2006 (Forum)
  Reuters: Inventor turns dead cats into diesel A German inventor says he's found a way to make cheap diesel fuel out of dead cats. Dr Christian Koch, 55, from Kleinhartmannsdorf, said his method uses old tyres, weeds and animal cadavers. They are heated up to 300 Celsius to filter out hydrocarbon which is then turned into diesel by a catalytic converter.
• Toyota Lucida/Emina - No fuel at diesel injectors,glow plugs not working 26 Nov 2012 (Forum)
  I have recently acquired my brothers car which has been standing for the last 18 months since he passed away. The car has been started a couple of...
• Turbo Diesel Cars- precautions 18 Jan 2002 (Forum)
  I am about to take delivery of my first TDI car- Leon TDI 110. Apart from the care needed to avoid overheading a HOT turbo are there any other points I...