Can I endorse Miller Oils' Diesel Power Eco Max for DPF care, as used in my Vauxhall Zafira?

I have an old-school 2.0DTI in a Vauxhall Zafira. I have had issues with the EGR valve for about three years. Instead of having it replaced my local friendly garage "cleans" it and all is well, or was...

Can I use nitrogen instead of air in my tyres?

At a recent visit to ATS Tyres they suggested that I inflate the tyres on my Land Cruiser with nitrogen saying that this leads to better handling of the vehicle, less pressure loss and less corrosion to...

Thanks for recommending Shell V Power fuel - I use it in my 1996 Cadillac Deville.

Having read a number of car articles in the Daily Telegraph (yes, some of us in the "Colonies" do read material from outside our borders), I noted your advice in using high-quality fuels, not just for...

Is there an easy way to unclog my Honda Civic's windscreen washer reservoir?

The jets of the windscreen washers of my 2008 Honda Civic S-Type barely reach the windscreen. A mechanic friend has said that it is the reservoir filter clogged up with sediment from the windscreen wash...

Why does Volkswagen Auto Group exclude shock absorbers from its warranty?

We started a thread in the Backroom (/www.honestjohn.co.uk/forum/posts/?t=93339) complaining about VAG excluding shock absorbers from its warranty and giving only six months (as with brake pads etc). Can...

Why shouldn't I use supermarket fuel?

I get the impression that you think it best to avoid supermarket petrol. Why?

My diesel Corsa won't start

I'm working on a Vauxhall Corsa 1.3 diesel and for some reason it won't start. On the diagnostics it's saying codes P0100 and P0110 - it's got plenty of fuel in and I've tried towing it! Have u any ideas...

I replaced my diesel Octavia with a petrol Avensis and have saved a lot of money.

I was interested in your correspondent RY of Peterborough's comments about diesel engines. After 10 years of driving new and nearly new Volkswagen Group diesels and experiencing many of the problems your...

Will a K&N filter be more efficient at filtering in dusty conditions?

I have a 1996 Lexus LX450 that I use in Luanda, Angola. It spends a lot of time going down dusty, sandy, tracks so I change the air, oil and fuel filters every 5000km. These regular changes are partly...

Are modern cars too technologically advanced for their own good?

One day I am going to write an article about how car design is wholly wrong in environmental terms. We are scrapping cars at 7 to 10 years old when the vast number of components would last at least 20....