I read that engine oil is contaminated by the DPF in 4x4s - is this the case with all diesel cars?

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?

Why don't diesel cars come with an option to manually regenerate the DPF?

I'm interested in understanding why a driver cannot request their car to kick off a regeneration manually, for example, when they get on the motorway for a long journey. I have a Honda CR-V 2.2 with a...

How should I get rid of the soot in my DPF?

What's the best way to clean soot from a DPF?

How do I regenerate my vehicle's DPF?

Can you please advise how to regenerate the DPF on a Mercedes-Benz E-Class?

My car is showing a 'check exhaust emission' light - what should I do?

I have a 2008 Renault Koleos 2.0d. In the past two weeks I've done four journeys in excess of 50 miles at high speed (dual carriageway). A couple of days ago, a warning appeared saying "check exhaust emission"...

I didn't know short runs could damage a diesel car - should I change my diesel Mazda 6?

Although I really like my diesel Mazda 6, I had no knowledge regarding the DPF i.e. short runs not doing it any good. Are there any other cars with as good a spec as the Mazda 6, which are less complicated?...

Why won't my Hyundai Santa Fe let me upshift if it thinks we're going too slow?

My Hyundai Santa Fe will not let me change up manually if it thinks we are going to slow. My other Tiptronic auto would let me go into any gear, even at 30mph I could put it in top gears.

What are the drawbacks with DPFs?

What are the drawbacks with particulate filters?

I've not had to top up the oil in my Peugeot 308 in between services - is something wrong with it?

I have a Peugeot 308. I have done 20,000 miles since I bought it, total mileage is 40,000, and I had the engine oil changed twice. I'm concerned that I have not had to top up the oil level in between services....

I bought a Mazda 3 four months ago - a fault has now occurred, can I claim the cost of repairs from the garage?

I bought a Mazda 3 2.2d in June this year. Four months later, the oil pressure light is on. The dealership warranty was only for 60 days. Who do I set a claim against to have the car repaired? I feel the...