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• petrol too expensive? Just run your car on water 27 Jun 2008 (Forum)
  Worried about the price of oil? Here is the answer to your problems! The government have been keeping this technology hidden so they can keep oil prices...
• Subary Justy 4WD 1989 running badly 5 Dec 2004 (Forum)
  Haven't seen the car... but apparently it is inclined to lose revs somewhat alarmingly whilst driving. This is an intermittent fault. That's as much...
• running a diesel in ? 26 Nov 2004 (Forum)
  Should i ? shouldnt i ? it will be a renault megane sport tourer 1.9dci 120 6 speed is it worth a poll ? or just let me know with a yes or a no cheers (I...
• overheating 23 May 2004 (Forum)
  Would a 50%antifreeze/coolant mix with water lower the running temp.Also when using a high octane petrol such as shell optimax in an old conventional engine--1949standard vanguard--is the running temp raised?.My block may be sludged up ,the rad seems ok,does anyone know of a stronge internal cleaner ?
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  What's the fuel efficiency of a plug-in hybrid when the battery has run out? 19 Jul 2021 (Ask HJ)
  Is there a rule of thumb about how much less efficient a plug-in hybrid is when the battery runs out compared to a combustion engine equivalent? For example,...
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  I got a diesel van when I only do short runs and now the DPF keeps clogging. What petrol van should I replace it with? 15 Apr 2020 (Ask HJ)
  I made the mistake of buying a diesel Fiat Doblo van. I only do short runs and the DPF keeps clogging up, even a long run does nothing. What small van...
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  How good are hybrid cars? 26 Dec 2016 (Ask HJ)
  How good are hybrid cars?
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  Honda Civic 2015 - diesel or petrol? 21 Oct 2015 (Ask HJ)
  I am looking to buy a Honda Civic 2015. I am currently doing fairly short trips to work 5 days a week with my Ford Focus diesel (around 15 mins in the...
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  Would I benefit from higher-grade petrol? 4 Oct 2015 (Ask HJ)
  I have driven a BMW E30 318i automatic from new which I had converted to run on unleaded petrol when leaded petrol was phased out. I currently always refuel...
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  Do runflats really work? 2 Apr 2015 (Ask HJ)
  I'm thinking of changing my 13 year old Vauxhall Omega Estate and find that most potential replacements do not have a spare wheels and use run flat tyres....
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  Running a modern classic - is super unleaded best? 15 Aug 2014 (Ask HJ)
  My friend is convinced she needs to put super unleaded in her 1988/9 Volkswagen Golf. She thinks this is because leaded petrol is no longer available and...
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  'Running in' a new Santa Fe 1 Jul 2014 (Ask HJ)
  I am picking up a new Hyundai Santa Fe next week from Nice, France. I had planned to drive back up the Autoroute, via Paris, to the tunnel and back home...
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  Can you recommend an economical family car? 4 May 2014 (Ask HJ)
  I am having to sell my BMW 3 Series convertible as am expecting a baby and it is proving too expensive to run and a bit impractical. Please can you recommend...
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  Returning a garaged car to the road after a long time - is it worth the effort? 8 Feb 2013 (Ask HJ)
  I have a BMW E30 325i - the car was in mint condition when placed in a garage in France 8 years ago. Occasionally started since. Never given a long run....
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  Shell V-Power 16 Jan 2013 (Ask HJ)
  I recently saw A Fifth Gear test on super fuels like Shell V Power. The conclusion was that benefits were minimal. Some forums also claim that any improvements...
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  Best run flats for BMW 5 Series 10 Jan 2013 (Ask HJ)
  Having just had my second tyre blow out at high speed on a motorway, I'm looking to replace all 4 run flats on my BMW 525i Touring with the latest generation...
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  Audi A6 Particulate Filter warning light 17 Dec 2012 (Ask HJ)
  The particulate filter warning light came on two days ago. I read the manual which suggested running the car in fourth or fifth above 2000rpm for 15 minutes...
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  Anti-pollution fault 10 Nov 2012 (Ask HJ)
  My Peugeot 308 has “System states: anti-pollution system fault” and engine light showing when I start the engine. Everything is working fine and the car...
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  Winter tyres - what to do? 5 Oct 2011 (Ask HJ)
  I have a 2006 56 model BMW 520 d SE Auto which I plan to keep for two winters. They are now on 225/50 run flats on 17 inch alloys. 1. Do I just fit...
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  Check Emissions warning 28 Sep 2011 (Ask HJ)
  I have a continuous warning for check emissions although the car is running fine. My local independent garage ran a diagnostic check & came up with a...