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  Can you suggest a runflat tyre brand that gives a smooth ride? 15 Sep 2017 (Ask HJ)
  I have been running Pirelli P7 runflats (225/55 R17 Y) on my BMW 5 Series for years. Is there now a runflat available which might give a less hard ride?
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  How do you run in a diesel? 11 Feb 2014 (Ask HJ)
  What is the best procedure for running-in a new Honda iVtec 2.2 diesel engine. Do you still recommend the use of Miller's Diesel Plus additive? You...
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  Daylight running lights 2 Jul 2011 (Ask HJ)
  Should my new Skoda Octavia, first registered in June 2011, have the daylight running lights operating or does it meet the legal requirements by just having...
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  Why is my Audi A6 running lean? 5 Sep 2010 (Ask HJ)
  I have a Audi A6 1.8T Quattro. The engine light is on, and I had it put on a computer which says it's got a air leak on the intake causing it to run lean....
• Astra 1.9 cdti - Pro's and Con's of running a diesel with no A Filter 6 May 2017 (Forum)
  Are there any pros or cons of running adiesel with no air filter to help it breath better   Can anyone advise
• Ford Fiesta - Running in? 26 Oct 2012 (Forum)
  Just got my very nice, new, Fiesta Zetec S TDCI - no mention of running in in the manual... Is that a thing of the past?  I just drive it normally from the get go?
• Car running costs 21 Jan 2004 (Forum)
  Does any one out there know where on the internet I can find details of car running costs? These are usually set out as 'pence per mile' in tables. Thanks. CG
• Mazda 6 2008 - Diesel Run-away - Air intake cut off 26 Oct 2013 (Forum)
  Hi Everyone, have not been on here for a while! I was just wondering that if a car, such as the Mazda 6 diesel 2008 2.0tdi was to run-away on its own fuel, by turning off the ignition - would it cause the run-away to stop? My main reason for asking specifically about this car, is that i need to know if it has an air intake valve which shuts off when the ignition is off....knowing one of the ways to stop an engine run-away is to starve it of air.
• Rover 200 (1995 - 1999) - 97 1.6 How was it running at all? 20 Jun 2008 (Forum)
  I've just replaced the Dizzy cap on a colleagues 216 16v as it was running like a bag of spanners. When I took the cap off, the carbon brush literally crumbled into dust & the main coil lead snapped clean off at the cap end (it had gone a mouldy green colour). I replaced the coil lead as the other 4 looked brand new and the car now starts first time and runs nicely now, but I am amazed how the car was even running in the first place!!
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  Can run-flat tyres with a puncture be repaired? 15 Jun 2021 (Ask HJ)
  Can a Pirelli run-flat tyre with a nail in the tread be repaired?
• BMW 1 Series E81/E87 (2004 - ) - 06 2.0 Run flat indicator 10 Jun 2009 (Forum)
  I recently changed all 4 of my run flat tyres at the sametime. But since then on two separate occasions, the run flat indicator has activated despite being reset. Any ideas or should I just ignore it. The manafacturers warranty ends 1/9/09.
• Vauxhall Astra G Petrol (1998 - 2004) - 99 1.6 8V runs as if choke is staying on too long 18 Dec 2008 (Forum)
  Car runs as if the choke was staying on too long. If you don't keep the car running when started, if it cuts out then the spark plugs need changed. Parts already changed: temprature sensor, lambda sensor,cat & EGR valve.
• Short runs - Petrol CVT or diesel manual. 26 Oct 2008 (Forum)
  I know the Petrol/Diesel debate is ongoing but I see and hear conflicting advice which is best for short runs. As per the title, if the choice was between, say, a Jazz CVT and perhaps a Berlingo/Partner Escapade 1.6Hdi, what would you say? More concerned about maintenance issues rather than straight mpg on the short runs.
• Bio Diesel 6 Jan 2007 (Forum)
  Has any one got any info on this stuff. i am going to buy a diesel and was going to run it on this stuff. The mechanic said oh it will ruin your engine, over time. I have only run a car for two tankfuls and it ran perfectly. There is a supplier local to me, and a taxi driver who was running a PD tdi audi a6 said he was running on bio-diesel.
• TDI Diesels - after a run 11 Mar 2002 (Forum)
  'm sure I read in HJ's column somewhere that I should leave my diesel engine running after a long run before switching off. Why is this necessary and why don't manufacturers warn buyers about it? My engine is a 2.5 TDI (102 bhp). Congratulations by the way on this site. I had a very quick and helpful responce to my previous queries....Bob
• Anyone running on veg oil? 30 Nov 2009 (Forum)
  Not seen any discussion for a while about running diesels on veg oil. I would of thought that with the current prices of diesel more people would be doing this. Was it just a passing fad?
• Skoda Octavia I (1998 - 2004) - 03 1.9 Running on bio diesel 15 Nov 2009 (Forum)
  Quick question - Can the non-PD 110hp engine run on bio diesel?
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  Can I fit run-flat tyres to my Hyundai Kona Electric? 7 Nov 2022 (Ask HJ)
  I bought a Hyundai Kona electric earlier this year. It comes with a 'repair kit', which I don't want - I've had problems in the past. They would not fit...
• Renault Zoe - 600 miles per month- Running Costs? 15 Sep 2019 (Forum)
  What is the monthly running cost for this car, and what are your battery recommendations when searching for a used car? Thanks!
• Volkswagen Golf III 1.8 - My car can start but can't keep running 15 Sep 2016 (Forum)
  My car have problems of can start but can't keep running