DERV hurt

I have recently purchased my first diesel car and have been informed that I should put the expensive diesel in from time to time as it is a cleaner fuel and cleans the injectors etc. I understood that diesels would run on anything. Advice please.

Asked on 9 October 2011 by APF, East Preston

Answered by Honest John

I reckon BP Ultimate diesel is the best, both for performance and for economy. Shell V Power diesel is excellent for the health of the fuel system, but in my experience it does not improve economy. You can get a variation of 5mpg between different diesel fuels. Diesel with inadequate lubricity can wreck the injection pump. Diesel with inadequate detergent can lead to blocked fuel systems and injectors. Be very careful when filling with Shell, BP and Total because their top petrol and diesel, and even Shell's standard Fuelsave are branded the same whether petrol, or diesel. Very easy to misfill with petrol.

Tags: v-power diesels

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