Ask Honest John

Most recently answered petrol questions
Could you advise on the shelf life of petrol? I refuelled my Volvo XC60 with Shell 99 RON one month ago and I've not used the car to go more than a few miles since.
I do not expect to use my car for another three weeks due to the coronavirus lockdown. It has already been stored in the garage for three weeks. I'm following your guidelines regarding over-inflating tyres...
Currently, most petrol sold in the UK is E5 i.e 5% ethanol. I understand that the Government is considering increasing this to 10%. What would the effect of this be, especially on older cars, and in both...
Does leaded petrol contain ethanol?
I have had a five-gallon metal can of unleaded petrol in the garage for more than three years. Does it deteriorate?
What is the best premium fuel brand for petrol and diesel?
I have a 1971 MG MGB roadster, bought recently as a retirement present. I’ve wanted one for 50 years and I’m delighted, but I don’t know whether I should run it on premium petrol, or whether standard is...
I need help to choose the right car. This will be my first car in the UK. I've started a small business recently and we're looking for an economic and spacious car to carry wicker and wooden products (baskets,...
I bought a Kia Venga 1.6-litre automatic, which is nice, but I preferred the Hyundais I've had in the past. If I were to change I notice there is a 1.6-litre petrol (I only drive petrol) automatic on the...
I'm looking to buy a 2016 Mazda2 1.5 Petrol Sport Nav, either 90PS or 115PS. Are both engines chain cam?
 

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