Ask Honest John

Most recently answered dpf questions
I have been driving a diesel-engined car for almost 10 years and, although I don't do high mileage any more, I am still potentially interested in staying with a diesel engine. Recently you sung the praises...
I have just bought the additive called Diesel power 3 from Wynn's because my DPF is now doing it's job at around 120miles so i thought now is enough! So I bought that additive and my question is: A Ford...
My son has had one of these for about 4 months and I am bitterly regretting the advice I gave him to buy a diesel. The car is 08 and about 80k, has run without problems, no warning lights, suddenly cut...
NB of Littlebourne’s email was timely for me since, that very day, whilst driving my 2010 diesel automatic Honda CR-V in sub zero conditions, I experienced hesitation seemingly from the gearbox. I set...
I have a 2006 Ford Focus 1.6TDci LX that has only 70,000 miles on the clock, but has a failed turbo (bearings have collapsed!) The DPF is blocking, but the garage are sure they can burn it out, so it will...
Apparently short trips are not good for diesels. At work we use the Platinum Plus additive in our delivery van to make it burn off the soot in the DPF at a lower temperature. Our drivers report that performance...
I've been advised to replace the DPF filter on my 2006 Passat by Volkswagen for a price of £1850 - but I am not convinced that this will improve matters. The car went into limp-home mode in July, and...
After much thought I've decided to buy a secondhand Kia-approved Cee'd Ecodynamics for just over £10,000. The brand new seven-year warranty is obviously tempting, but does it cover the DPF/injection issues...
Will weekly runs of 20 miles out, two hours rest, and 20 miles back be enough to burn off diesel particulates. The rest of the week the car does 8-10 miles daily, and once a year 1500 miles, with 10 days...
My car is powered by a Volkswagen 140bhp diesel engine, code BRT. I need to know whether this engine has a DPF. The reason is that the oil is Volkswagen-spec 50501 if not, but 50700 if it is. Seems to...