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I know you are not in favour of supermarket fuel, but... 15 Nov 2012 (Ask HJ)
I know you are not in favour of supermarket fuel, so I decided to check it out against my normal fuel which is Shell regular diesel. I drive a Nissan... -
Who’s fuelling who? 17 Jan 2009 (Ask HJ)
My BMW 118d still very good. Excellent to drive and getting anywhere between 54+ and 56+ mpg average and occasional 60+mpg on long, careful runs. Quite... -
I have a diesel car that's been sat around for 8 months. Could this cause the injectors to fail? 2 Feb 2021 (Ask HJ)
The engine in my diesel Mercedes was fine before but it was left sitting for nearly eight months, without starting. When it was started again the engine... -
Running-in a new car - what fuel should I use? 28 Feb 2014 (Ask HJ)
Assuming that BP Ultimate or Shell V-Power diesel is not readily available (I am going abroad), do you recommend the use of Millers Diesel Power Plus during... -
Law and hoarder 15 Aug 2009 (Ask HJ)
I have noticed recently, that the price of petrol has been creeping up faster than diesel. In fact I have seen it in some garages, higher than diesel.... -
Why don't fuel companies try to prevent people using the wrong fuel? 13 Oct 2012 (Ask HJ)
There is not a month goes by without someone telling me how they have inadvertently filled their vehicle with the incorrect fuel, and the resultant eye-watering... -
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... -
Can you recommend a diesel automatic for £10,000? 14 Sep 2013 (Ask HJ)
With a budget of £10,000, what Focus or bigger-sized diesel auto would you recommend secondhand? I'm running 30,000 miles per year, so it shouldn't be... -
For richer for pourer 4 Sep 2011 (Ask HJ)
I have a Jaguar XF 2.7D. I have always used Redex Fuel System Cleaner, but wonder if it is really of any use? I only drive about 5,000 miles per year and... -
Starting problems with diesel 4 Jul 2015 (Ask HJ)
I live in Spain and in winter months (below 10ºC) the first time I try and start my 2.5CRD Voyager it takes me cranking for about 10 seconds. It usually... -
Can I clarify how biofuels are processed? 28 Apr 2012 (Ask HJ)
I read your explanation regarding the emulisification of biofuels and think you have mixed up the two major fuel types: Bioethanol (ethanol from a biological... -
Why has Shell's 'fuel saver' diesel increased my Chevrolet Cruze's consumption from 29.4mpg to 27.86mpg? 3 Apr 2011 (Ask HJ)
I have now run a Chevrolet Cruze diesel auto for over one year. Since Shell introduced "Fuel saver" diesel, my consumption has increased to 27.86 mpg average... -
Hyundai i30 diesel fuel pump failure 25 Feb 2016 (Ask HJ)
I own a Hyundai i30 (2007 model) with a 2.0-litre diesel engine. After a major service at a main dealer an advice note came back that the fuel pump was... -
Contaminated fuel 26 Dec 2015 (Ask HJ)
I recently took my 2008 Jag XF for a routine service at a main dealer who reported a problem with the injectors. On removal the diesel was found to be... -
Can premium fuel prevent a DPF from clogging up? 29 May 2020 (Ask HJ)
I have read that buying premium diesel will help prevent the DPF from blocking up as it has additives in it. Is this true or am I wasting my money? -
Fuel consumption in winter 20 Feb 2012 (Ask HJ)
Hi can you tell me if diesel engines use more diesel in the cold weather? My economy has dropped from 55mpg in the warm weather To 46-47 Mpg in the winter. -
Which estate is best? 13 May 2014 (Ask HJ)
Which is better as a used car for £15,000: a BMW 5 Series or a Volkswagen Passat for £15,000? Also, should I buy a petrol or diesel? -
Can I get a remap to improve the fuel economy of my Kia Cee'd? 9 May 2017 (Ask HJ)
Based on your advice and all you've written, I bought a Kia C'eed estate auto 1.6 diesel (no DPF) with 37,000 miles on the clock from a Kia dealer this... -
Will it cost more to own a used diesel car? 12 Nov 2018 (Ask HJ)
Will it cost more to own a used diesel car? -
Is it true that diesel engines are unsuited to mainly short journeys? 2 Aug 2017 (Ask HJ)
Is it true that diesel engines are unsuited to mainly short journeys?
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