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  Best diesel for Jaguar F-Pace? 5 Oct 2016 (Ask HJ)
  I have a new Jaguar F-Pace. Is it worth buying branded diesel,rather than supermarket fuel? If so is premium worth the extra?
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  Volvo V50 injector failure - van you help? 18 Jan 2016 (Ask HJ)
  I've had this car for three years and it has done just under 60,000 miles. During that time it has has various problems (sound system replaced, clutch...
• fuel savers 4 Oct 2006 (Forum)
  i was just looking around ebay and i picked up on a load of "fuel savers". there is loads of different kinds on there from plastic things to a guy who you give a couple of quid and he will tell you that something you can buy out of your supermarket that saves fuel. do these things really really work ?
• Fuel prices (again!) 1 Jul 2005 (Forum)
  Just noticed that prices near where I live (South Devon) have finally crept above 91p a litre for diesel, even at supermarket stations. I'm accustomed...
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  Can I use standard unleaded in my 1990 Mini Moke? 8 Oct 2018 (Ask HJ)
  I have just bought a 1990 Mini Moke, but the dealer is not sure if the cylinder head has the hardened valve seats to use unleaded petrol. Do you think...
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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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  Can I put E10 fuel in my Golf R? 16 May 2022 (Ask HJ)
  My Volkswagen Golf R is recommended to run on super unleaded 98 RON which is now super expensive. I know the performance and mpg might drop slightly if...
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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,...
• Tesco Petrol 28 Feb 2007 (Forum)
  BBC News tonight reported that there seems to be a problem with contaminated petrol at Morrisons and Tesco supermarkets in the south east. Some cars have sustained expensive engine damage apparently caused by contaminated fuel..
• Supermarket buying advice 6 Apr 2003 (Forum)
  Previous postings I could find have been favourable. Also am I likely to get anywhere if I push for extras in the final negotiations (mats/flaps/fuel etc.)? Any comments would be will be gratefully received.
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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...
• Fuel comparison tests 15 Dec 2005 (Forum)
  In the latest Jan. 2006 Evo magazine, there is an article on comparison tests on 8 different brands of petrol, including supermarket fuels. They used a Golf GTI and a BMW M5 and did rolling road tests to get power/torque figures, and on-road "driving feel" tests. Makes quite interesting reading. I know they did a similar thing on Fifth Gear recently, but I missed it.
• All makes - Contaminated Fuel 15 Nov 2019 (Forum)
  Rip Off Britain drew attention to the growing problem of water contamination in fuel, both petrol and diesel. Two cases were highlighted , both took place at Supermarkets but they said it could have happened elsewhere. The problem seems to be have been made worse following the introduction of bio in the fuel which causes a by product of water when it mixes with fuel.
• Jet Fuel 3 Jan 2006 (Forum)
  I have read articles about the quality of various brands of fuel and the whys and wherefores of using the premium versions of some brands, (shell optimax, bp premium, etc) but I have not seen reference to JET fuel brand. I presume that this is better than supermarket fuel as it contains some additives, but can anyone tell me whether this is equal or better than shell, bp, texaco ?
• Mercedes-Benz SL-Class R129 - Premium v Standard Fuels 2 Dec 2016 (Forum)
  An engineer once told me "If you have any respect for your engine never use supermarket fuel. In fact, only use Premium." My Classic Car buddy (retired from the oil industry) tells me that using Premium all the time can have an abrasive effect on the engine, he suggests Premium every fourth fill.
• enhancing the lubricity of diesel 17 Nov 2010 (Forum)
  much seems to have been made about the components of common rail injection systems which are lubricated by the fuel itself. i.e. high pressure pump, injectors etc. Seeing as some of the long-running horror stories seem to concentrate on the use of "contaminated fuel" or supermarket-grade fuel - I wonder if there is a product on the market that can be added to diesel to provide additional lubricity?
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  Would I get any benefit from switiching to Shell V-Power or similar? 27 Jan 2014 (Ask HJ)
  I usually fill up with branded diesel rather than supermarket diesel but would I get any benefit from switiching to Shell V-Power or similar? My car has...
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  If I start using premium fuel after 80k miles, will there be a release of carbon deposits and would this damage the engine? 3 May 2020 (Ask HJ)
  My Avensis has done 82,000 trouble-free miles on supermarket petrol. If I now start using Shell high octane fuel, will I get a sudden release of carbon...
• Subaru Impreza II WRX 2001 - Type of fuel 4 Feb 2012 (Forum)
  As two well known supermarket chains sell normal unleaded with a rating of 95, then I would hope that I would be okay using this. My question is, does anyone else have knowledge of this fuel debate in Impreza's through experience, or hearsay???
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  Why is BP fuel so expensive? 15 Jan 2024 (Ask HJ)
  My local BP garage is still charging £1.55 per litre for their cheapest diesel, much more than any prices mentioned in the article (although in November...