Is it harmful to use premium fuels?

My grandson is in the motor trade (a qualified technician) and is of the opinion that sole use of top grade fuel, eg Shell V-Power diesel, is damaging to the engine. Is there any truth in this?

Can I use BP Ultimate diesel in my Skoda Yeti?

Can I use BP Ultimate diesel in my Yeti? The DPF rules say no biodiesel. I understand that BP Ultimate is also biofuel-based?

Will using a premium diesel help with my Mercedes-Benz E220's running problem?

My 2007 Mercedes-Benz E220 CDI with 49,000 miles sometimes used to feel like it was trying to lurch forward while moving at low speed, without any change on the accelerator. For the last month it is shaking...

Is using premium diesel causing an EGR valve problem on my 2001 Skoda Octavia?

For the last 30,000 miles I've run my 2001 Skoda Octavia 1.9 TDI with 110,000 miles mainly on Shell V-Power diesel. Having done a fairly fast run down the motorway and left it parked overnight, the next...

Have you had any feedback on Tesco's Momentum99 premium fuel?

My W-reg Audi 1.8 Sport was bought new and has done 58,500 miles. I normally fill up with Shell V-Power following your advice and I like the improved smoother running with better pick-up from low revs....

How can I stop my Honda Civic hesitating under acceleration?

I have recently bought a 2007 Honda Civic 1.8i ES, and have owned it for a week. I commute 40 miles a day to my workplace and, in an effort to keep fuel costs to a minimum, I try and be as delicate as...

Why is my Peugeot 206's engine management warning light coming on?

My Peugeot 206 XSI 1.6 petrol has an anti-pollution fault and engine management fault light on the dashboard. It also went to reduced power with little or no acceleration available, but was able to drive...

How can I tell whether my Mitsubishi Chariot has a piston or ring problem?

I have a Mitsubishi Chariot 1996 2.0 auto and would like to know how I can tell if I have a piston or ring problem. The last thing I want is to take the engine out to check. I am too scared to drive the...

Can I try a premium fuel to improve my Vauxhall Astra's fuel economy?

I drive a 2006 Astra 1.8 SRI with 49,000 miles on the clock. A few months ago, the onboard computer indicated a 15-20 per cent drop in economy. I checked and found it was showing I had used more gallons...

Using premium fuel in my Volkswagen Passat has improved fuel economy and burns more cleanly.

For a while I had been sceptical about the benefits of using higher quality fuel opposed to cheaper supermarket grades. Now that I have been using Shell on a regular basis, it has cleaned the injectors...