Ask Honest John

Most recently answered diesel engines questions
I read in a recent 4x4 review that the engine oil is quickly contaminated by the DPF. Is this the case on all diesel engines with a DPF, and can it affect the life of the engine?
The Jaguar F-Pace service interval is 21 months. Mine is now 12 months old and has done 7000 miles. Should I have anything done now, like an oil change, or is it okay to wait the 21 months?
Car manufacturers are continuing to manufacture diesel cars despite all the adverse publicity about diesel. Nearly all motoring websites continue to recommend diesel as the best buy in versions of automatic,...
I own a campervan with a Euro 4, 3.0-litre diesel engine. I'm becoming concerned that, because of anti-diesel legislation in the UK and Europe, it will become unusable and therefore valueless. What is...
I have a 2010 Volkswagen Golf Plus 1.6 turbodiesel which had its emissions 'fix' done at 43,000 miles. Is it better to get rid of it or should I just wait and see if the DPF lasts for a couple more years?
I have a Skoda Fabia 1.6 TDI. I just got the recall letter for the emissions upgrade, but I'm not happy to do it. Have any Fabia 1.6 TDI owners had it done and what was the outcome?
I had the emissions "fix" on my 2010 Audi A3 at the end of February and had nothing but problems since. Power has been altered dramatically and even to the point of cutting out on me a few times. I've...
I had the emission fix done six weeks ago on my Volkswagen Golf 1.6 TDI. After only 500 miles, an injector failed. Car has only done 41,000 miles. I took the car to a Volkswagen garage who changed it free...
My daughter has bought a three year old Isuzu pickup truck with only 12,000 miles on the clock. The DPF light keeps coming on, the main dealer says that this is normal because it shows that the regeneration...
I have just been informed by Skoda that my 2013 Skoda Yeti 2.0 4x4 DSG is ready for the EA189 NOx emissions service action. I have heard such a lot of bad press regarding the fix and my car runs fine,...
 

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