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  Why is diesel more expensive than petrol? 2 Nov 2012 (Ask HJ)
  Could you explain why the cost of diesel fuel is up to 8p per litre more than petrol? As diesel is a lower fraction of the crude oil from which it is made...
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  High performance car, high performance fuel. 9 Feb 2012 (Ask HJ)
  I am purchasing an Audi S4 2005 model - will the car run on standard unleaded or should/must I use super unleaded or V-Power? If I have an option...
• Car insurance 5 Feb 2012 (Forum)
  a gallon seemed ridiculous not that long ago. On the same subject ,has their ever been a study to compare the rise in salaries with the rise in fuel costs . If you were take the average salary in 1970 to be say £1000 ,and fuel cost £1 a gallon , that would be .01% of an annual salary . How would
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  Eco-tuning 26 Apr 2011 (Ask HJ)
  I have received a flier for an ECU-remapping service claiming to improve fuel consumption by up to 20% - www.ecu-remapping-service.com. It is not cheap,...
• Nissan Pathfinder - Computer fault history - can it be recovered? 22 Jan 2011 (Forum)
  I am having huge difficulties with Nissan regarding a fuel rail that I had replaced 16 months ago on my Pathfinder. About 6 months after having it fitted I experienced loss of power and took it back to my dealer. They told me that the fault code indicated a fuel rail problem again. When I told
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  Most economical estate car 3 Jan 2011 (Ask HJ)
  I am looking to purchase an estate car. It will be used as a business car and i'll be travelling about 250 miles a week. I need a bit of comfort, plenty...
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  Nissan Micra 1.0 Passion 9 Nov 2010 (Ask HJ)
  I own an 'R' Reg Nissan Micra 1.0 Passion which has recently started giving me a problem. It will start perfectly when cold but after about 15 minutes...
• Audi A4 B7 - VCA fuel consumption - conspiracy theory 29 May 2010 (Forum)
  can't get it over 40 mpg! Then I found the "vehicle data sticker" in the service logbook which gives the combined cycle fuel consumption as a very poor 29.6 mpg and emissions of 228 g/km!!! Anyone else come across this before? Can anyone else with an A4 Avant with this engine tell
• Peugeot 306 (1993 - 2001) - 1995 2.0 dust in fuel tank 26 Apr 2008 (Forum)
  I bought my daughter a 95 2lt 306 petrol here in Australia and shorlty after buying it my son took it to "grass" motokana which was more dust than grass. After about 20 minutes of competing in the dust the thing refused to run over idle, then died. A dead fuel pump and "mud and excrement
• Ford Mondeo IV (2007 - ) - 2.0 petrol manual fuel economy 6 Mar 2008 (Forum)
  Hi guys, Currently got a new shape Mondeo for a couple of days and am finding the fuel consumption is absolutely apalling. I don't drive like my trousers are on fire so to find that it returned just 32mpg from London to Devon just now (Empty roads and cruise control the whole way) is hugely
• Ford Mondeo III (2000 - 2007) - 2.2 TDCi (05) - EGR valve? 12 Sep 2007 (Forum)
  The ST TDCi has suddenly started emitting blue smoke on start up and missing badly under engine load (esp 2-3K rpm). I'll confess to using supermarket fuel but, in my defence: it could be a bad batch as it started straight after filling up on Thursday and it's run fine for the past 11 months
• Make your own bio-fuel 19 May 2006 (Forum)
  In todays Daily Telegraph London Property Section was a short article that included how to turn cooking oil into bio-fuel for diesel engines. Sorry there is no link, so I have retyped it. Make your own bio-fuel All you need is a 45 gallon oil drum painted black and with a tap down
• Golf 1990. fuel mixture & idle speed 13 Sep 2005 (Forum)
  My Golf that I bought a month ago is due for the MOT and when I changed the plugs it was apparent from looking in the Haynes manual that the fuel mixture is too rich. Also, even when it is warmed up and the choke put in the engine seems to be running a bit fast. I just phoned a local garage about
• Running costs 26 Mar 2004 (Forum)
  this equates to 4p per mile. Depreciation has been aproximately £17000 Per mile = 13p Fuel economy circa 35mpg per mile = 10p Road tax at £165 per year Per mile = 0.5p So in total 27.5p per mile.(Didn'nt bother with insurance) All very interesting I thought, I wonder how this compares to other
• Ford Focus Saloon - New Fuel Saver prototype, Head up Display 26 Aug 2015 (Forum)
  This is a short video of the latest version of my saver. I would be grateful if you can have look and let me know your opinion. Thanks Look on youtube, ...
• Vauxhall cora sxi 2002 - Won't start but turns over 8 Sep 2014 (Forum)
  I've just got a corsa sxi 2002. She was starting ok & running ok. I went to start her & she's turning over,but won't start. The fuel gauge won't move off empty,got plenty of fuel. Also the mileage isn't been displayed.
• ford fiesta zetec s tdci 2007 - car runs rough 29 Jan 2014 (Forum)
  My car runs fine for a while then seems to run as if the turbo is not working but if I undo the fuel filter drain plug just a little bit power is restored. I have replaced the fuel filter but same problem now driving me mad. help....
• Ford Mondeo 2.2tdci auto estate - High fuel consumption 2 Jan 2014 (Forum)
  Bought this car last January (2013) and very pleased overall except I can't get more than an indicated 37mpg under any conditions, no matter how carefully...
• Peugeot 206 1.9diesel w reg - Engine starting problem 22 Aug 2012 (Forum)
  Hi,my 206 would not start unless I spray with easy start then It runs fine.there was no fuel getting to the ignitors when I turned it over initially.would a blocked fuel Filter cause this to happen?any advice appreciated.there is power to the glow plugs and stop start solenoid.
• Fuel storage legal question 20 Aug 2012 (Forum)
  Is it legal to store diesel in a 5 litre can marked petrol? I'd never store petrol in a diesel can as the flammable vapours might catch out the unwary,...