Ask Honest John

Most recently answered dpf questions
I reluctantly have to part with my very comfortable 31,000 2006 Volvo S80 SE D5 185 due to worsening back problems. A local garage has a September 2012 ex-demo Honda CR-V 2.2i-DTEC EX 5-door diesel (old...
I'm looking for a second-hand SUV for my wife to do the school run in. I don't want to spend a fortune but want something comfortable that is not thirsty. What do you think about a 2005 Volvo XC 90 2.5T...
My Jaguar XF 3.0D kept coming up "restricted performance" and yes I have been using it for short runs. However, I got a bottle Forte turbo cleaner and a bottle DPF cleaner and put them in the fuel tank...
I am taking possession of a new Honda CR-V 2.2 iDTEC EX auto at the end of the month. With previous diesel vehicles I have driven them from new following your guidelines with no problems. Unfortunately...
Would you please kindly clarify for me as to what one can expect from the latest range of Ford diesel engines? I am currently shopping around for a nearly new Ford Focus or Mondeo car. A local Ford salesman...
I read that you stated that modern diesels are unsuitable for successive runs from cold, which I fully comprehend, but how does diesel drain into the sump as a consequence?
How often should DPF regeneration occur? I bought a new Vauxhall Corsa in November 2012, 2 days after having the car and only driving about 10miles the DPF light came on. Most of my journeys are short,...
I am writing you regarding my Ford Focus 1.6TDCI. I purchased it in April 2012 with 38,000 miles on the clock. In October the engine malfunction light came on. I took it into the Ford garage we purchased...
I currently drive a 2009 Skoda Roomster 1.4 turbo diesel, which is fine for towing my small dinghy. However, I am considering buying a bigger boat and will need a vehicle that can comfortably tow 650 kilos....
My wife's 2010 BMW 118d Coupe automatic caught fire under the bonnet last week and completely burned out. Fortunately, she evacuated in time and called the Fire Brigade, but the car is a write off. It...