Ask Honest John

Most recently answered v-power questions
Is a tank of Shell petrol V power every 5th fill worth it? Does it have a decent cleaning effect over one tank of fuel? Should I go with it consistently?
What is the best premium fuel brand for petrol and diesel?
I've always used Shell V Plus diesel in my Range Rover TDV8, with 160,000 miles on it. My neighbour said it was a waste of money, so I switched to Asda diesel. My car now has worse fuel economy and runs...
I've followed your advice for a number of years regarding premium fuel, both petrol and diesel. I usually put BP Ultimate or Shell V Power in both cars, a petrol MINI and a diesel BMW X3. I appreciate...
I've recently bought a Toyota Auris with the 1.2 turbo petrol engine (and am very pleased with it so far). I intend to keep it for a good long time; at least 10 years, ideally. I understand that direct...
I have an Hyundai Ioniq, which I've run exclusively on Shell fuels for the 5000 miles that I've had it. I was getting 60-62 mpg on the regular stuff, then put a tank of the V-Power in and got 64 mpg. I...
I have Vauxhall Crossland X 1.2T 130PS and intended to use Shell V-Power fuel to keep the components as clean as possible. After reading the owners manual, it recommends 95 Ron - 98 Ron. As Shell V-Power...
I have Piaggio Medley 125 and tick over is very erratic. I've only done 1500 miles. Do you know what the problem is?
We've decided to get a Honda Jazz SE Automatic for its space and versatility. We understand that it can be considered slow compared to other similar size vehicles. Would we would have any benefit by using...
You mention that supermarket petrol can clog up engines and reduce MPG from the deposits in their additives. I understand that it's best to use branded super unleaded. Is it the case that branded normal...
 

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